CN113521423A - Independent milk duct perfusion assembly and use method thereof - Google Patents

Abstract

The utility model provides an independent type breast duct perfusion subassembly and application method thereof, is including stretching into the intraductal perfusion catheter of breast, and the front end of perfusion catheter has the probe of stretching into, and the tail end has the mouth of pouring into of being connected with the syringe, stretch into the probe and include a conical skeleton and the elastic film who sets up around its conical surface, and enclose into first inflation expansion area between elastic film and the conical skeleton, have the perfusate export with perfusion catheter intercommunication at the toper pointed end of conical skeleton, rotate the perfusion catheter makes stretch into the probe and stretch into behind the breast duct bottom, reuse the syringe to pour into. The invention is an independent component independent of the outside of the galactoscope, and is used together with the galactoscope, although the integral operation of the galactoscope examination becomes complex, the whole operation needs to be firstly performed by the galactoscope perfusion component, and then the galactoscope examination is performed after the galactoscope perfusion component is taken out, but the perfusion process is more natural, the dosage is easier to control, and meanwhile, the perfusion from the inside to the outside and the flushing effect are better.

Description

Independent milk duct perfusion assembly and use method thereof

Technical Field

The invention relates to the field of galactoscopy in the mammary gland department, in particular to an independent galactoscopy perfusion assembly and a use method thereof.

Background

The ductoscopy is a method for examining the lumen and the wall of a mammary duct by an ultrafine optical fiber endoscope ductoscopy, can observe the position, the size, the surface form and the number of a focus under direct vision, helps a clinician to determine the position, the operation range and the like of the focus, can realize early discovery and early treatment on patients with malignant tumors in the duct, and improves the detection rate of early breast cancer.

Generally, during the process of the galactoscopy, liquid is injected into the breast duct cavity to wash out the blocked breast duct cavity and wash out mucus in the cavity so as to facilitate the observation of the galactoscopy, and during the process of the galactoscopy or the process of withdrawing the galactoscopy, the galactoscopy inevitably stimulates the breast duct cavity to generate secretions, so that the secretions need to be filled and washed after the galactoscopy is withdrawn.

At present, the injection pipeline of the endoscope body of the galactoscope is generally adopted for the perfusion of the galactoscope, but the injection pipeline is very thin and is generally only 0.2mm, and the length is generally 150-200mm, the injection resistance is very large, the assistant is not only inconvenient to operate, but also is difficult to master the dosage of the injected perfusion solution.

Disclosure of Invention

The invention provides an independent breast duct perfusion assembly and a use method thereof, aiming at solving the problems of large liquid injection resistance, inconvenient operation and difficult mastering of injection dosage in the existing breast duct perfusion by using a liquid injection pipeline carried by a breast duct endoscope body.

The technical scheme adopted by the invention for solving the technical problems is as follows: a kind of independent breast duct perfusion assembly, including the perfusion conduit stretching into the breast duct, and the front end of the perfusion conduit has stretching into the probe, the tail end has perfusion port connected with inspirator, the said stretching into the probe includes a conical skeleton and elastic membrane around its conical surface arrangement, and enclose into the first inflation expansion area between elastic membrane and conical skeleton, have perfusate outlet port communicated with perfusion conduit in the conical tip of the conical skeleton, rotate the said perfusion conduit makes the said stretching into the probe stretch into the breast duct bottom, reuse the inspirator to perfuse;

the gas channel and the filling channel are arranged in the filling conduit, the gas channel is communicated with the first inflation expansion area and a gas connector arranged at the tail end of the filling conduit, and the filling channel is communicated with a filling liquid outlet and a filling opening.

As an optimization scheme of above-mentioned stand alone type breast pipe perfusion subassembly, set up the first inflation and deflation hole that communicates first inflation district and gas channel on the conical skeleton, and this first inflation and deflation hole is controlled it by the first shutoff pad that is in the gas channel and is opened and close, first shutoff pad be in the afterbody of a rotating member, the outer wall of this rotating member and the inner wall threaded connection of outer tube, and form handheld rotation portion behind the protruding outer tube of the front end of rotating member, twist through the finger and hand the rotation portion anticlockwise or clockwise rotation, drive rotating member and outer tube and take place relative movement, and then realize that first shutoff pad is to the opening and closing of first inflation and deflation hole.

As another optimization scheme of the independent milk tube perfusion assembly, the front end of the perfusion catheter is provided with a probe supporting mechanism for fixing a probe extending into the perfusion catheter, the probe supporting mechanism comprises an annular hollow supporting sleeve fixed around the outer tube, at least three hollow supporting tubes are uniformly distributed around the hollow supporting sleeve, the end part of each hollow supporting tube is provided with an inflation expansion end, the hollow supporting tubes and the hollow supporting sleeve are communicated, and the hollow supporting sleeve is communicated with the gas channel through at least two second inflation and deflation holes.

As another optimization scheme of above-mentioned stand alone type breast pipe perfusion subassembly, the second fills the gassing hole and is controlled its opening and closing by the second shutoff pad that is in gas passage, the second shutoff pad be in on a rotating member, the outer wall of this rotating member and the inner wall threaded connection of outer tube, and form handheld rotating part behind the front end protrusion outer tube of rotating member, twist handheld rotating part anticlockwise or clockwise rotation through the finger, drive rotating member and outer tube and take place relative movement, and then realize the second shutoff pad and fill opening and closing of gassing hole to the second.

As another optimization of the above independent milk duct perfusion assembly, the perfusion catheter comprises an outer tube and an inner tube located inside the outer tube, a gas passage is formed between the outer wall of the inner tube and the inner wall of the outer tube, and a perfusion passage is formed inside the inner tube.

As another optimization scheme of the independent breast duct perfusion assembly, a sliding type breast duct dredging structure is arranged on the perfusion guide pipe in a sliding mode and comprises a sliding ring sleeved on the perfusion guide pipe in a sliding mode, two vertical plates surrounding the edge of the sliding ring are symmetrically arranged on two sides of the sliding ring, an annular cavity is formed between the two vertical plates, an annular air bag is arranged at the bottom of the annular cavity, at least three arc-shaped scrapers are arranged on the annular air bag and spliced to form an annular piece surrounding the annular air bag when the annular air bag is not inflated and expanded, the top of the annular piece does not protrude out of the annular cavity, the arc-shaped scrapers are pushed to extend out of the annular cavity after the annular air bag is inflated and expanded to form a dredging head protruding out, a gap is formed between every two adjacent arc-shaped scrapers, and perfusion liquid sprayed out of the extending probe flows back to the position between the extending probe and the sliding type breast duct dredging structure, one part flows out of the milk duct through the gap, and the other part generates pressure for pushing the sliding type milk duct dredging structure to slowly move out of the milk duct along the perfusion conduit.

As another optimization scheme of the independent milk duct perfusion assembly, the sliding milk duct dredging structure has an initial position close to the extending probe, and when the sliding milk duct dredging structure is at the initial position, one end of a third inflation/deflation hole formed in the sliding ring is in butt joint with an air guide hole formed in the side wall of the perfusion duct and communicated with an air channel, and the other end of the third inflation/deflation hole is communicated with the annular air bag so as to complete inflation/deflation of the annular air bag through the air channel.

As another optimization scheme of the independent milk tube filling assembly, the air guide hole in butt joint with the third air charging and discharging hole in the filling conduit is controlled to be closed and opened by the third sealing pad, the third sealing pad is positioned on a rotating piece, the outer wall of the rotating piece is in threaded connection with the inner wall of the outer tube, the front end of the rotating piece protrudes out of the outer tube to form a handheld rotating part, the handheld rotating part is screwed by fingers to rotate anticlockwise or clockwise, the rotating piece and the outer tube are driven to move relatively, and then the third air charging and discharging hole is opened and closed by the third sealing pad.

As another optimized solution of the independent breast duct perfusion assembly, a transparent overflow collecting sleeve is arranged at the tail end of the perfusion catheter, the overflow collecting sleeve comprises an elastic cover made of silica gel material, the center of the elastic cover is provided with a mounting hole for the perfusion catheter to pass through, the outer edge of the elastic cover is curled to form a liquid storage space, a nipple probing area is formed between the outer edge and the mounting hole, and the back of the outer edge is provided with a sticker adsorbed on the breast.

The use method of the free standing milk duct perfusion assembly comprises the following steps:

1) smearing lubricating liquid on the surface of the extending probe;

2) rotating the perfusion catheter while inserting the probe into the target breast duct, and continuing rotating the perfusion catheter while inserting the perfusion catheter into the target breast duct until the probe enters the bottom of the target breast duct after the probe is completely inserted into the target breast duct;

3) connecting a gas connector to a gas source, injecting a preset amount of sterile gas into the perfusion catheter, and then closing the gas connector to keep the gas pressure in the perfusion catheter;

4) and connecting the perfusion opening with an injector for sucking the perfusion liquid, and slowly pushing the injector to inject the perfusion liquid into the perfusion opening until the perfusion liquid overflows from the front end of the breast duct.

Compared with the prior art, the invention has the following beneficial effects:

1) the invention is independent of the independent part outside the galactoscope, use with the matched with galactoscope, although lead to the galactoscope to examine the whole operation become complicated and need to pour with the galactoscope perfusion assembly first, take out the galactoscope perfusion assembly and then carry on the galactoscope and examine, but the pouring process is more natural, it is easier to control the dosage, meanwhile, pour from inside to outside, the flushing effect is also better;

2) the invention can be stretched into the probe and perfusion catheter in the breast duct through the design, and have gas channel and perfusion channel in the perfusion catheter, while using, utilize the gas channel to make the first inflatable expansion zone stretched into the probe swell and stand out first, prevent the perfusate outlet from being blocked by the pathological change tissue, later perfuse, make the perfusate flow outside the breast duct after bypassing the first inflatable expansion zone, realize the perfusion of the breast duct from inside to outside washes;

3) the extending probe is matched with a probe supporting mechanism, the probe supporting mechanism is provided with hollow supporting tubes, and after the hollow supporting tubes are inflated, inflation expansion ends at the end parts of the hollow supporting tubes expand and protrude and are contacted with the inner wall of a milk tube, so that the extending probe is positioned and supported, and meanwhile, channels between the inflation expansion ends cannot influence perfusion and flushing of perfusion liquid flowing out of the extending probe on the milk tube;

4) the invention is provided with a sliding type milk duct dredging structure at the rear part of a probe extending into a perfusion catheter, the core of the sliding type milk duct dredging structure is a sliding ring sliding arranged on the perfusion catheter, an annular air bag arranged on the sliding ring and an arc-shaped scraper arranged on the annular air bag, when the annular air bag is inflated and expanded, the arc-shaped scraper is pushed to extend out to form a convex dredging head, the arc-shaped scraper expands radially due to the uniform expansion of the annular air bag, a gap is generated between the adjacent arc-shaped scrapers, when perfusion fluid flows into the space between the probe extending into the perfusion catheter and the sliding type milk duct dredging structure, a part of the perfusion fluid generates pressure pushing the arc-shaped scraper to move outwards, so that the arc-shaped scraper is pushed to drive the whole sliding type milk duct dredging structure to move outwards slowly, secretion on the inner wall of the milk duct is dredged in the moving process, and due to the existence of the gap between the adjacent arc-shaped scrapers, the pressure of the perfusion liquid in the breast duct is not too high, and the breast duct is not irritated;

5) the perfusion liquid is poured and washed from inside to outside, and inevitably occurs, the perfusion liquid flows to the chest skin of an operator after overflowing from the front end of the breast tube, and then flows downwards along the skin of the operator.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the rear portion of the irrigation catheter;

FIG. 3 is an enlarged schematic view of the anterior portion of the irrigation catheter (with the extension probe unexpanded);

fig. 4 is a schematic perspective view of a sliding type milk duct dredging structure;

FIG. 5 is a schematic cross-sectional view of a sliding type milk duct dredging structure;

FIG. 6 is a schematic view of the inner cross section of the sliding type milk duct guiding structure (when not opened);

FIG. 7 is a schematic view of the inner cross section of the sliding type milk duct guiding structure (when opened);

FIG. 8 is a schematic structural view of the probe support mechanism (when not expanded);

FIG. 9 is a schematic structural view of the probe support mechanism (when expanded);

FIG. 10 is an enlarged schematic view of the anterior portion of the irrigation catheter (with the extension probe expanded);

FIG. 11 is a schematic view of an uninflated, inflated, extended probe;

FIG. 12 is a schematic view of the inflatable balloon of the extension probe;

reference numerals: 1. the perfusion catheter comprises a perfusion catheter body 101, an outer tube 102, a rotating part 103, an inner tube 104, a gas channel 105, a perfusion channel 106, a third plugging pad 107, a second plugging pad 108, a first plugging pad 109, a handheld rotating part 2, a perfusion opening 3, a stretching probe 301, a conical framework 302, an elastic film 303, a first inflation and expansion area 304, a perfusion liquid outlet 305, a first inflation and deflation hole 4, a sliding type milk duct dredging structure 401, a sliding ring 402, a vertical plate 403, an arc-shaped scraper blade 404, an annular air bag 405, an annular cavity 406, a third inflation and deflation hole 407, a gap 5, a probe supporting mechanism 501, a hollow supporting sleeve 502, a hollow supporting tube 503, an inflation and expansion end 6, a gas joint 7, a overflowing liquid collecting sleeve 701, an elastic cover 702, a mounting hole 703, an outer edge, 704, a liquid storage space 705, a glue paste, 706. nipple insertion area, 8, support rod.

Detailed Description

The technical solution of the present invention will be further described with reference to the following embodiments, and the portions of the present invention which appear in the following embodiments and are not described in detail do not relate to the improved portions of the present invention, and the functions of the present invention, such as the structure of the pouring port 2 and the connection thereof with the existing pouring equipment or injector, and the structure of the gas connector 6 and the connection thereof with the existing inflating equipment, etc., can be realized by replacing the existing technology or similar related structures.

Example 1

A free standing breast duct perfusion assembly, as shown in fig. 1, 10, 11 and 12, comprises a perfusion conduit 1 extending into a breast duct, the perfusion conduit 1 is a thin-walled metal tube with a thickness of 0.3-0.8mm, which diameter of the perfusion conduit can be determined according to the expansion condition of the breast duct of the specific condition of a patient, the length is generally 25-40cm, and has certain elasticity, the front end of the perfusion conduit 1 is provided with an extending probe 3, the tail end of the perfusion conduit is provided with a perfusion opening 2 connected with an injector, the perfusion opening 2 is connected with the perfusion opening by the injector, then the injector is pushed to enable the perfusion liquid in the perfusion conduit 1 to enter into a perfusion head assembly, and then the perfusion of the breast duct is completed when the perfusion liquid flows into the breast duct, the extending probe 3 comprises a conical framework 301 and an elastic membrane 302 arranged around the conical surface of the conical framework, the conical framework 301 is made of silica gel, and a first inflation area 303 is defined between the elastic membrane 302 and the conical framework 301, the conical tip of the conical framework 301 is provided with a perfusate outlet 304 communicated with the perfusion catheter 1, when the extension probe 3 extends to the inner bottom of the breast duct, a certain amount of gas is firstly filled into the first inflation expansion area 303 to expand and bulge the first inflation expansion area to form an expansion head in the process of entering the breast duct, the pathological change tissue in the breast duct is propped open, meanwhile, a bulge part surrounding the perfusate outlet 304 is also formed, so that the perfusate outlet 304 is expanded into an outward-expanded liquid drainage area 306 to prevent the perfusate outlet 304 from being blocked by secretion of the breast duct, and the perfusion catheter 1 is rotated to enable the extension probe 3 to extend to the bottom of the breast duct, and then the injector is used for perfusion;

the perfusion catheter 1 is internally provided with a gas channel 104 and a perfusion channel 105, the gas channel 104 is communicated with the first inflatable expansion area 303 and a gas connector 6 arranged at the tail end of the perfusion catheter 1, and the perfusion channel 105 is communicated with a perfusate outlet 304 and a perfusion opening 2.

The independent type of the invention means that before the galactoscope examination, the perfusion is carried out without the help of the perfusion component carried by the existing galactoscope;

in the embodiment, the bracket rod 8 is arranged at the rear end of the perfusion catheter 1, and the bracket rod 8 can be fixed on the bracket, so that the movement caused by holding by hand during operation is avoided;

in this embodiment, the filling opening 2 and the gas connector 6 are both of the prior art, and only the requirement for filling the filling duct 1 with liquid and gas is satisfied.

The use method of the free standing milk duct perfusion assembly comprises the following steps:

1) smearing lubricating liquid on the surface of the extending probe 3;

2) the extending probe 3 is inserted into the target breast duct while the perfusion catheter 1 is rotated, after the extending probe 3 completely enters the target breast duct, the perfusion catheter 1 is continuously extended into the target breast duct while the perfusion catheter 1 is rotated until the extending probe 3 enters the bottom of the target breast duct; generally, the depth of a target breast duct is measured in advance by using a guide wire or in other modes, and then whether the target breast duct reaches the bottom of the breast duct is judged by the length of the perfusion catheter 1 extending into the breast duct;

3) connecting a gas connector 6 to a gas source, injecting a preset amount of sterile gas into the perfusion conduit 1, and then closing the gas connector 6 to keep the gas pressure in the perfusion conduit 1, wherein the preset amount of gas is mainly controlled by gas pressure and flow, and the purpose is to ensure that each inflatable component can be completely expanded to a preset size;

4) the perfusion opening 2 is connected with an injector for sucking the perfusion liquid, and the injector is slowly pushed to inject the perfusion liquid into the perfusion opening 2 until the perfusion liquid overflows from the front end of the breast duct. The perfusion time and the perfusion flow are set according to the command of the operating doctor.

The above is a basic implementation manner of the present invention, and the technical solution of the present invention can be further improved, optimized or limited on the basis of the above, so as to obtain the following embodiments:

example 2

This embodiment is an improved scheme based on embodiment 1, and the main structure thereof is the same as embodiment 1, and the improvement point is that: as shown in fig. 10, 11 and 12, the conical framework 301 is provided with first inflation/deflation holes 305 communicating the first inflation/deflation area 303 with the gas channel 104, the opening and closing of the first inflation/deflation holes 305 is controlled by the first plugging pad 108 located in the gas channel 104, the number of the first inflation/deflation holes 305 is generally two or three, and the first inflation/deflation holes 305 are uniformly distributed around the perfusate outlet 304, the first plugging pads 108 correspond to the first inflation/deflation holes one by one, the first plugging pad 108 is located at the tail of the rotating member 102, the outer wall of the rotating member 102 is in threaded connection with the inner wall of the outer tube 101, the front end of the rotating member 102 protrudes out of the outer tube 101 to form a handheld rotating portion 109, and the handheld rotating portion 109 is screwed by fingers or rotated clockwise to drive the rotating member 102 and the outer tube 101 to move relatively, thereby opening and closing the first inflation/deflation holes 305 by the first plugging pad 108.

Example 3

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 3, 8, 9 and 10, the front end of the perfusion catheter 1 is provided with a probe supporting mechanism 5 for fixing the extending probe 3, the probe supporting mechanism 5 is located at a side of the extending probe 3 away from the first inflation expansion area 303, the probe supporting mechanism 5 comprises an annular hollow supporting sleeve 501 fixed around the outer tube 101, at least three hollow supporting tubes 502 are uniformly distributed around the hollow supporting sleeve 501, 4 hollow supporting tubes are shown in fig. 8 and 9, the end part of the hollow supporting tube 502 is provided with an inflation expansion end 503, the hollow supporting tube 502 and the hollow supporting sleeve 501 are communicated, and the hollow supporting sleeve 501 is communicated with the gas channel 104 through at least two second inflation and deflation holes.

In this embodiment, the inflation puff 503 is made of an elastic film, and when not inflated, has a height not exceeding the edge extending into the probe 3, and when a certain amount of gas is inflated, the inflation puff 503 has a protruding height exceeding the edge extending into the probe 3 and contacting the breast duct wall; the loft of the inflation puff 503 is controlled by controlling the inflation pressure to match the elasticity of the material of the inflation puff 503.

Example 4

This embodiment is an improved scheme based on embodiment 3, and the main structure thereof is the same as embodiment 3, and the improvement point is that: as shown in fig. 8, 9 and 10, the second air charging and discharging hole is controlled to be opened and closed by a second plugging pad 107 located in the air passage 104, the second plugging pad 107 is located on a rotating member 102, the outer wall of the rotating member 102 is in threaded connection with the inner wall of the outer tube 101, the front end of the rotating member 102 protrudes out of the outer tube 101 to form a handheld rotating portion 109, the handheld rotating portion 109 is screwed by fingers to rotate anticlockwise or clockwise, the rotating member 102 and the outer tube 101 are driven to move relatively, and then the second air charging and discharging hole is opened and closed by the second plugging pad 107.

The rotating member 102 in this embodiment is actually the same as the rotating member 102 in embodiment 2, and the second sealing pad 107 and the first sealing pad 108 synchronously control the opening and closing of the second air vent and the first air vent.

Example 5

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 11 and 12, the perfusion catheter 1 includes an outer tube 101 and an inner tube 103 disposed therein, a gas passage 104 is formed between an outer wall of the inner tube 103 and an inner wall of the outer tube 101, and a perfusion passage 105 is formed inside the inner tube 103. The front ends of the inner pipe 103 and the outer pipe 101 are fixedly connected with the conical framework 301, so that the inner pipe and the outer pipe are fixed.

Example 6

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 3, 4, 5, 6 and 7, the perfusion catheter 1 is slidably provided with a sliding type milk duct canalizing structure 4, the sliding type milk duct canalizing structure 4 comprises a sliding ring 401 slidably sleeved on the perfusion catheter 1, two vertical plates 402 surrounding the edge of the sliding ring 401 are symmetrically arranged on two sides of the sliding ring 401, an annular cavity 405 is formed between the two vertical plates 402, an annular air bag 404 is arranged at the bottom of the annular cavity 405, the bottom of the annular air bag 404 is fixedly connected with the sliding ring 401, the upper part of the annular air bag can expand along the annular cavity 405 after being inflated, at least three arc-shaped scrapers 403 are arranged on the annular air bag 404, when the annular air bag 404 is not inflated and expanded, the arc-shaped scrapers 403 are spliced to form an annular member surrounding the annular air bag 404, the top of the annular member does not protrude out of the annular cavity 405, when the annular air bag 404 is inflated and expanded, the arc-shaped scrapers 403 are pushed to extend out of the annular cavity 405, form the protruding mediation head outside, and protruding mediation head height is higher than the height of stretching into 3 protruding filling pipe 1 of probe, produce gap 407 between two adjacent arc scraper 403, from stretching into 3 spun perfusate of probe backward flow to stretching into between probe 3 and the sliding milk duct dredging structure 4, partly flow outside the milk duct through gap 407, another part produces the pressure that promotes sliding milk duct dredging structure 4, promote sliding milk duct dredging structure 4 and slowly move outside the milk duct along filling pipe 1, and at the removal in-process, dredge the secretion in the milk duct.

Example 7

This embodiment is an improved scheme based on embodiment 6, and the main structure thereof is the same as that of embodiment 6, and the improvement point is that: as shown in fig. 5, 6 and 7, the sliding type milk duct canalizing structure 4 has an initial position close to the extending probe 3, and when the sliding type milk duct canalizing structure 4 is in the initial position, one end of a third inflation/deflation hole 406 arranged in the sliding ring 401 is in butt joint with the inflation hole arranged on the side wall of the perfusion catheter 1 and communicated with the air channel 104, and the other end is communicated with the annular air bag 404, so as to complete inflation/deflation of the annular air bag 404 through the air channel 104.

Example 8

This embodiment is another modified scheme based on embodiment 6, and the main structure thereof is the same as embodiment 6, and the improvement point is that: as shown in fig. 5, 6 and 7, the air-guide hole in the perfusion catheter 1, which is abutted to the third air-vent 406, is controlled to be closed and opened by the third plugging pad 106, the third plugging pad 106 is located on a rotating member 102, the outer wall of the rotating member 102 is in threaded connection with the inner wall of the outer tube 101, the front end of the rotating member 102 protrudes out of the outer tube 101 to form a handheld rotating part 109, the handheld rotating part 109 is screwed by fingers to rotate counterclockwise or clockwise, the rotating member 102 and the outer tube 101 are driven to move relatively, and the third air-vent 406 is further opened and closed by the third plugging pad 106.

In embodiment 6-8, the perfusion tube 1 corresponding to the initial position of the sliding type milk duct canalizing structure 4 has an air hole corresponding to the third air-filling and air-discharging hole 406, and the air hole is closed by the third plugging pad 106, during the sliding process, because the connection between the sliding block 401 and the surface of the perfusion tube 1 is not completely closed, the air will gradually escape, and further the protruding height of the scraping plate 403 is gradually reduced to conform to the characteristics of the milk duct that the diameter is wide inside and narrow outside;

in this embodiment, the rotating member 102 is substantially the same as the rotating member 102 in embodiments 2 and 4, and one rotating member 102 drives the third sealing pad 106, the second sealing pad 107 and the first sealing pad 108 synchronously to control the opening and closing of the third air vent hole 406, the second air vent hole and the first air vent hole.

Example 9

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 2, the tail end of the perfusion catheter 1 is provided with a transparent overflow collecting sleeve 7, the overflow collecting sleeve 7 comprises a sheet of elastic cover 701 made of silica gel material, the center of the elastic cover 701 is provided with a mounting hole 702 for the perfusion catheter 1 to pass through, the outer edge 703 of the elastic cover 701 is curled to form a liquid storage space 704, a nipple probing area 706 is formed between the outer edge 703 and the mounting hole 702, and the back of the outer edge 703 is provided with a sticker 705 attached to the breast.

In this embodiment, after the infusion catheter 1 with the front end stretches into the breast duct, the sleeve 7 is collected through sliding the overflowing liquid after stretching into the probe 3, so that the nipple passes through the nipple probing area 706, and then the sticker 705 at the back of the outer edge 703 sticks on the breast, thereby realizing the sealing of the nipple, and the perfusate and the tissue liquid overflowing from the breast duct can enter the overflowing liquid collecting sleeve 7.

In this embodiment, the elastic cover 701 has a slit along the radial direction of the mounting hole 702 to separate the cover, and the two sides of the slit are combined into a whole by using an adhesive structure, and when in use, the mounting hole 702 is sleeved on the perfusion catheter 1 through the slit.

Claims (10)

1. A stand alone breast duct infusion assembly, including stretching into the intraductal infusion pipe (1) of breast, and the front end of infusion pipe (1) has and stretches into probe (3), and the tail end has and fills mouth (2) with injector connection, its characterized in that: the extending probe (3) comprises a conical framework (301) and an elastic film (302) arranged around the conical surface of the conical framework, a first inflation expansion area (303) is defined between the elastic film (302) and the conical framework (301), a perfusion liquid outlet (304) communicated with the perfusion catheter (1) is arranged at the conical tip of the conical framework (301), and the perfusion catheter (1) is rotated to enable the extending probe (3) to extend into the bottom of the breast duct, and then the injection syringe is used for perfusion;

fill and have gas channel (104) and filling channel (105) in pipe (1), gas channel (104) intercommunication first aerify inflation district (303) and fill gas connector (6) that pipe (1) tail end was equipped with, fill channel (105) intercommunication perfusate export (304) and fill mouth (2).

2. A free standing milk duct priming assembly according to claim 1, wherein: the gas pipeline sealing device is characterized in that a first inflation and deflation hole (305) which is communicated with a first inflation and deflation area (303) and a gas channel (104) is formed in the conical framework (301), the first inflation and deflation hole (305) is controlled to be opened and closed by a first plugging pad (108) which is positioned in the gas channel (104), the first plugging pad (108) is positioned at the tail part of a rotating piece (102), the outer wall of the rotating piece (102) is in threaded connection with the inner wall of an outer tube (101), the front end of the rotating piece (102) protrudes out of the outer tube (101) to form a handheld rotating part (109), the handheld rotating part (109) is screwed by fingers to rotate anticlockwise or clockwise, the rotating piece (102) and the outer tube (101) are driven to move relatively, and then the first inflation and deflation hole (305) is opened and closed by the first plugging pad (108).

3. A free standing milk duct priming assembly according to claim 1, wherein: the front end of pouring into pipe (1) is provided with probe supporting mechanism (5) that are used for fixed probe (3) of stretching into, and this probe supporting mechanism (5) are including encircleing outer tube (101) fixed ring form cavity support cover (501), encircle this cavity support cover (501) evenly distributed have three at least hollow stay tubes (502), and the tip of hollow stay tube (502) has aerifys inflation end (503), aerify inflation end (503), hollow stay tube (502) and cavity support cover (501) intercommunication, and cavity support cover (501) fill gas pocket and gas channel (104) intercommunication through two at least seconds.

4. A free standing milk duct priming assembly according to claim 3, wherein: the second air charging and discharging hole is controlled to be opened and closed by a second plugging pad (107) in the air channel (104), the second plugging pad (107) is arranged on a rotating piece (102), the outer wall of the rotating piece (102) is in threaded connection with the inner wall of an outer tube (101), a handheld rotating portion (109) is formed after the front end of the rotating piece (102) protrudes out of the outer tube (101), the handheld rotating portion (109) is screwed by fingers to rotate anticlockwise or clockwise, the rotating piece (102) and the outer tube (101) are driven to move relatively, and then the second plugging pad (107) is opened and closed to the second air charging and discharging hole.

5. A free standing milk duct priming assembly according to claim 1, wherein: the perfusion catheter (1) comprises an outer tube (101) and an inner tube (103) arranged in the outer tube, a gas channel (104) is formed between the outer wall of the inner tube (103) and the inner wall of the outer tube (101), and a perfusion channel (105) is formed inside the inner tube (103).

6. A free standing milk duct priming assembly according to claim 1, wherein: the perfusion catheter (1) is provided with a sliding type milk duct dredging structure (4) in a sliding manner, the sliding type milk duct dredging structure (4) comprises a sliding ring (401) sleeved on the perfusion catheter (1) in a sliding manner, two vertical plates (402) surrounding the edge of the sliding ring (401) are symmetrically arranged on two sides of the sliding ring (401), an annular cavity (405) is formed between the two vertical plates (402), an annular air bag (404) is arranged at the bottom of the annular cavity (405), at least three arc-shaped scrapers (403) are arranged on the annular air bag (404), the arc-shaped scrapers (403) are spliced to form an annular piece surrounding the annular air bag (404) when the annular air bag (404) is not inflated and expanded, the top of the annular piece does not protrude out of the annular cavity (405), and the arc-shaped scrapers (403) are pushed to extend out of the annular cavity (405) after the annular air bag (404) is inflated and expanded to form a dredging head protruding outside, a gap (407) is formed between two adjacent arc-shaped scrapers (403), perfusate sprayed from the probe (3) is refluxed to the position between the probe (3) and the sliding type breast duct dredging structure (4), one part flows out of the breast duct through the gap (407), the other part generates pressure for pushing the sliding type breast duct dredging structure (4), and the sliding type breast duct dredging structure (4) is pushed to slowly move out of the breast duct along the perfusion conduit (1).

7. A free standing milk duct priming assembly according to claim 6, wherein: the sliding type milk duct dredging structure (4) is provided with an initial position close to the extending probe (3), when the sliding type milk duct dredging structure (4) is located at the initial position, one end of a third air charging and discharging hole (406) formed in the sliding ring (401) is in butt joint with an air guiding hole formed in the side wall of the perfusion catheter (1) and used for communicating with an air channel (104), and the other end of the third air charging and discharging hole is communicated with the annular air bag (404) so as to complete air charging and discharging of the annular air bag (404) through the air channel (104).

8. A free standing milk duct priming assembly according to claim 6, wherein: the air guide hole in butt joint with the third air charging and discharging hole (406) in the perfusion catheter (1) is controlled to be closed and opened by the third plugging pad (106), the third plugging pad (106) is located on a rotating piece (102), the outer wall of the rotating piece (102) is in threaded connection with the inner wall of the outer tube (101), the front end of the rotating piece (102) protrudes out of the outer tube (101) to form a handheld rotating part (109), the handheld rotating part (109) is screwed by fingers to rotate anticlockwise or clockwise, the rotating piece (102) and the outer tube (101) are driven to move relatively, and then the third plugging pad (106) is enabled to open and close the third air charging and discharging hole (406).

9. A free standing milk duct priming assembly according to claim 1, wherein: the tail end of the perfusion catheter (1) is provided with a transparent overflowing liquid collecting sleeve (7), the overflowing liquid collecting sleeve (7) comprises an elastic cover (701) made of a silica gel material, the center of the elastic cover (701) is provided with a mounting hole (702) for the perfusion catheter (1) to pass through, the outer edge (703) of the elastic cover (701) is curled to form a liquid storage space (704), a nipple probing area (706) is formed between the outer edge (703) and the mounting hole (702), and the back of the outer edge (703) is provided with a glue sticker (705) adsorbed on a breast.

10. Use of a freestanding milk duct infusion assembly according to claim 1, comprising the steps of:

1) smearing lubricating liquid on the surface of the extending probe (3);

2) the probe (3) is extended into the target breast duct while the perfusion catheter (1) is rotated, after the probe (3) is extended into the target breast duct completely, the perfusion catheter (1) is extended into the target breast duct while the perfusion catheter (1) is rotated continuously until the probe (3) is extended into the bottom of the target breast duct;

3) connecting the gas connector (6) to a gas source, injecting a preset amount of sterile gas into the perfusion catheter (1), and then closing the gas connector (6) to keep the gas pressure in the perfusion catheter (1);

4) the perfusion opening (2) is connected with an injector for sucking the perfusion liquid, and the injector is slowly pushed to inject the perfusion liquid into the perfusion opening (2) until the perfusion liquid overflows from the front end of the breast duct.

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