CN110477969B - Fistula plugging system - Google Patents
Fistula plugging system Download PDFInfo
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- CN110477969B CN110477969B CN201910611585.3A CN201910611585A CN110477969B CN 110477969 B CN110477969 B CN 110477969B CN 201910611585 A CN201910611585 A CN 201910611585A CN 110477969 B CN110477969 B CN 110477969B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00592—Elastic or resilient implements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00597—Implements comprising a membrane
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00601—Implements entirely comprised between the two sides of the opening
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00606—Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00623—Introducing or retrieving devices therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00641—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closing fistulae, e.g. anorectal fistulae
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00646—Type of implements
- A61B2017/00654—Type of implements entirely comprised between the two sides of the opening
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00676—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect promotion of self-sealing of the puncture
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/005—Auxiliary appliance with suction drainage system
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- General Health & Medical Sciences (AREA)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
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Abstract
The invention provides a fistula plugging system, which comprises an occluder bracket and a conveyor; the plugging device bracket comprises a central telescopic structure, a radial expansion structure and umbrella-shaped structures at two ends; the conveyer is used for carrying out the cartridge with central extending structure, realizes the relative flexible change drive of interior intubate and outer tube. The fistula plugging system can realize the self-adaptive adjustment of the size of the plugging device bracket by utilizing the radial expansion structure, and can expand according to the size of the fistula after being installed, so that the plugging of the fistula is more tight; the umbrella-shaped structures at the two ends are controlled to be unfolded or retracted by utilizing the relative expansion of the outer sleeve and the inner insertion tube, the umbrella-shaped structures can be in a fusiform shape before insertion, the insertion at the fistula site is convenient to smoothly carry out, the umbrella-shaped structures at the two ends are unfolded after deformation, and the protection of the umbrella-shaped structures at the two ends to the fistula site is realized.
Description
Technical Field
The invention relates to a medical appliance, in particular to a fistula plugging system.
Background
At present, in the treatment process of various visceral fistulae, conservative treatment such as comprehensive treatment of anti-infection, digestive juice secretion inhibition, internal and external drainage and decompression in the pleuroperitoneal cavity or through various natural cavities, nutrition enhancement, tissue repair promotion, granulation growth and the like is preferred, and self-healing is expected, and the period is long and the patients are very painful. Some secondary operations are selected to repair the fistula, but the operation difficulty is high, the risk is high, the success rate is low, and the risk of bleeding and re-fistula still exists in the repaired fistula.
In more common fistula, such as esophageal bronchus fistula, esophageal gastric anastomotic fistula, residual gastric fistula, gastrointestinal anastomotic fistula, various intestinal fistulae, bladder vaginal fistulae and rectal vaginal fistulae, fistula blocking is an important measure, so that the fistula is temporarily closed, continuity of the alimentary canal, respiratory tract, urinary tract and the like is recovered, the content is not overflowed any more, and the corrosion of the content to surrounding tissues and the loss of body fluid and the fatal complications of infection, bleeding and the like caused by the corrosion are reduced. After fistula is blocked, a relatively clean growth environment is created, the growth and healing of tissues at the fistula site are facilitated, the treatment time is effectively shortened, and the normal functions of the digestive tract, the respiratory tract, the urinary tract and the like can be recovered quickly. The current common fistula plugging methods are as follows: for the slit fistula, various medical glue, clamping and other blocking means are applied through the intervention approaches such as gastroenteroscope, bronchoscope or cystoscope, and some of the blocking means can be successful; for patients with larger defects of the fistula of the hollow viscera, after infection and inflammation are effectively controlled, the fistula is sutured, clamped or placed by adopting intervention approaches such as operation, gastrointestinal endoscope, bronchoscope or cystoscope, but the treatment effect is not definite after plugging, and complications such as infection around the fistula, hemorrhage, local necrosis, fistula expansion and the like are easily caused due to a plurality of interference factors; after the fistula is difficult to be plugged or fails to be plugged, only one-stage operation fistulization and drainage can be selected, and then the two-stage repair fistulization and anastomosis are performed, so that the treatment time is long, the pain of a patient is long, and complications such as anastomotic stoma stenosis, bleeding, infection and the like and risks of fistula re-fistula after repair are difficult to be avoided during and after the operation. The appearance of the occluder enables a plurality of patients suffering from heart diseases such as atrioventricular defect, main pulmonary artery fistula and the like to obtain good curative effects, avoids great damage of heart operation, is also applied to treatment of cavity organ fistula with infection and corrosion states through the improved occluder at present, but the prior occluder only performs fistula opening occlusion to isolate two sides of the fistula opening, but leaked or slowly leaked liquid cannot be discharged, further infection or corrosion is easily caused, and in addition, the occluder cannot perform self-adaptive size adjustment according to site occlusion requirements, and has poor universality. Therefore, it is necessary to design a fistula plugging system that can have a certain size expansion property, meet the adaptive size adjustment, and can aspirate out the leaked liquid, keep the fistula clean and sanitary and avoid causing further infection.
Disclosure of Invention
The invention aims at: the fistula plugging system can have certain expansion performance, meet the requirement of self-adaptive size adjustment, and can suck leaked liquid out, so that the fistula is kept clean and sanitary, and further infection is avoided.
In order to achieve the above object, the present invention provides a fistula plugging system comprising an occluder stent, an occluding membrane and a conveyor;
the plugging device bracket comprises a central telescopic structure, a radial expansion structure and umbrella-shaped structures at two ends; the plugging films are coated on umbrella-shaped structures at two ends of the plugging device bracket;
the central telescopic structure comprises a plug bolt, an outer sleeve and an inner sleeve; the right end of the inner cannula is inserted into the outer cannula, and a locking chute is arranged on the outer wall of the inner cannula; the inner wall of the outer sleeve is provided with a guide block which is slidably embedded into the locking chute; the left end pipe orifice of the inner cannula is provided with a membrane mounting round hole; the end part of the screw rod of the plug bolt passes through the membrane installation round hole and is then screwed and installed on the left end of the inner insertion pipe, and a liquid suction hole is axially formed in the plug bolt; the head of the plug bolt presses the hole edge of the film installation round hole on the left end pipe orifice of the inner insertion pipe; a channel plugging structure is arranged in the inner cannula;
the radial expansion structure comprises two central circular rings, an elastic supporting structure arranged on the circumference of the central circular rings and each axial stay bar; the two central circular rings are respectively sleeved on the outer sleeve and the inner sleeve; each axial stay bar is distributed and arranged on the periphery of the circumference of the central ring through an elastic supporting structure, and the axial stay bars are parallel to the axial direction of the inner cannula;
the umbrella-shaped structure is formed by circumferentially distributing U-shaped rods, one end of each U-shaped rod is fixedly arranged on the central telescopic structure, and the other end of each U-shaped rod is fixedly arranged on the radial expansion structure; the expansion and retraction change of the umbrella-shaped structure is realized when the central telescopic structure is in telescopic change;
the conveyer is used for being inserted with the central telescopic structure, and the relative drawing and inserting telescopic change driving of the inner cannula and the outer cannula is realized.
Further, the locking chute is composed of an axial chute, an inclined chute and a surrounding chute which are communicated in sequence; the axial sliding groove is parallel to the axial direction of the inner cannula; the surrounding sliding groove is arranged around the circumferential outer wall of the inner insertion tube and is positioned in the outer sleeve; one end of the surrounding chute is level with the axial extension line of the axial chute, and the other end of the surrounding chute is communicated with the axial chute through the oblique chute.
Further, the elastic supporting structure is composed of each diamond supporting frame and each V-shaped supporting frame; one acute angle of each diamond-shaped supporting frame is fixedly arranged on the outer circumference of the central ring, and the tip end part of each V-shaped supporting frame is fixedly arranged on the other acute angle of each diamond-shaped supporting frame; the axial stay bars are fixedly arranged on two adjacent end parts of two adjacent V-shaped support frames.
Further, one end of each U-shaped rod positioned at the left side of the plugging device bracket is butt-jointed and installed on the left end of the axial stay bar through a connecting section, and the other end of each U-shaped rod is installed on the circumferential edge of the left pipe orifice of the inner cannula through the connecting section; one end of each U-shaped rod is arranged on the right side of the plugging device bracket in a butt joint way through a connecting section and is arranged on the right end of the axial stay bar, and the other end of each U-shaped rod is arranged on the circumferential edge of the right pipe orifice of the outer sleeve through the connecting section; the cross sections of the connecting section and the U-shaped rod are flat rectangles, the thickness of the connecting section is smaller than the thickness of the end part of the U-shaped rod, and the thickness of the U-shaped bending part of the U-shaped rod is smaller than the thickness of the end part of the U-shaped rod.
Further, the channel plugging structure comprises a plugging disc and four arc-shaped supporting bars arranged at the circumferential edge of the plugging disc; a circle of limiting check ring is arranged on the inner wall of the inner cannula; the plugging disc is arranged in the inner insertion pipe through four arc-shaped supporting bars and is positioned at the left side of the limiting retainer ring; the four arc-shaped supporting bars elastically press the plugging disc to be clung to the left side edge of the limiting retainer ring so as to realize plugging.
Further, the conveyor comprises an insertion tube, a pushing tube and an inner pushing rod; the push tube is inserted in the insertion tube in a penetrating manner, and the inner push rod is inserted in the push tube in a penetrating manner; a first limit bump is arranged on the outer pipe wall at the left end of the insertion pipe; a second limit bump is arranged on the outer pipe wall at the left end of the pushing pipe; a circle of second limit ring grooves are arranged on the inner wall of the pipe orifice at the right end of the inner cannula; a second notch communicated with a second limit ring groove is arranged on the end face of the right pipe orifice of the inner cannula; an inner pipe limit convex ring is arranged at the pipe orifice of the right end of the outer sleeve, and a circle of first limit ring grooves are arranged on the inner ring surface of the inner pipe limit convex ring; a first notch communicated with the first limit ring groove is arranged on the end face of the right pipe orifice of the outer sleeve; the second limit bump enters the second limit ring groove from the second notch; the first limit bump enters the first limit ring groove from the first notch; one end of the inner push rod penetrates through the pushing pipe and stretches into the inner insertion pipe to push the plugging disc to be away from the limiting retainer ring.
Further, a rotation limiting chute is axially arranged on the inner pipe wall of the insertion pipe; a circle of supporting convex rings are arranged on the outer pipe wall of the pushing pipe, and the supporting convex rings are close to the inner pipe wall of the inserting pipe; the supporting convex ring is provided with a rotary limiting slide block which is slidably embedded into the rotary limiting slide groove.
Further, a tension spring fixing convex ring is arranged on the inner pipe wall of the insertion pipe; a tension spring is sleeved on the push tube; one end of the tension spring is fixed on the supporting convex ring, and the other end of the tension spring is fixed on the tension spring fixing convex ring.
Further, a side ear is arranged on the outer pipe wall of the right end of the insertion pipe, and a hand buckling hole is arranged on the side ear; a handle frame is arranged at the right end of the push tube; a limit disc is arranged at the right end of the inner push rod; the inner push rod is sleeved with a supporting pressure spring, and two ends of the supporting pressure spring are respectively and elastically supported on the handle frame and the limiting disc.
Further, a rotary seal is arranged at the pipe orifice at the right end of the pushing pipe and is used for forming a seal between the inner wall of the right pipe orifice of the pushing pipe and the outer wall of the inner push rod; the right pipe wall of the pushing pipe is communicated with a liquid suction butt joint pipe; a bar-shaped supporting bar is arranged on the outer wall of the right end of the inner push rod along the axial direction of the inner push rod; the strip-shaped supporting bar is supported on the inner pipe wall at the left end of the pushing pipe; the outer wall of the left end of the pushing tube is provided with a sealing ring which is used for forming sealing between the outer wall of the left end of the pushing tube and the inner wall of the inner tube.
The invention has the beneficial effects that: the size of the plugging device bracket can be adaptively adjusted by utilizing the radial expansion structure, and the plugging device bracket can be expanded according to the size of the fistula after being installed, so that the plugging of the fistula is more compact; the umbrella-shaped structures at the two ends are controlled to be unfolded or retracted by utilizing the relative expansion of the outer sleeve and the inner insertion tube, so that the umbrella-shaped structures can be in a fusiform shape before insertion, the insertion at the fistula can be smoothly carried out, the umbrella-shaped structures at the two ends are unfolded after deformation, and the protection of the umbrella-shaped structures at the two ends to the fistula can be realized; the locking chute and the guide block are matched to lock after the inner cannula and the outer cannula extend out relatively, so that umbrella-shaped structures at two ends are kept in an open state; the channel plugging structure can be used for realizing the conduction and closing control of the inside of the inner cannula, so that leakage liquid at the fistula site can be conveniently sucked out, and the fistula site is kept clean and sanitary to avoid further infection.
Drawings
Fig. 1 is a schematic view of the structure of the plugging device in the plugging state of the stent of the present invention;
fig. 2 is a schematic structural view of the occluder stent of the present invention in an initial state;
fig. 3 is a schematic structural view of the plugging device bracket in the plugging state;
FIG. 4 is a schematic cross-sectional view of the occluder stent of the present invention at the central annulus;
FIG. 5 is a schematic view of the design of the first notch and the second notch of the occluder stent of the present invention;
fig. 6 is a schematic diagram of the structure of the insertion of the conveyor and the stopper bracket according to the present invention.
Detailed Description
The technical scheme of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in fig. 1-6, the fistula plugging system of the present disclosure comprises: a stopper support, a stopper membrane and a conveyor;
the plugging device bracket comprises a central telescopic structure, a radial expansion structure and umbrella-shaped structures at two ends; the plugging films are coated on umbrella-shaped structures at two ends of the plugging device bracket;
the central telescopic structure comprises a plug bolt 40, an outer sleeve 1 and an inner insert 2; the right end of the inner cannula 2 is inserted in the outer cannula 1, and a locking chute is arranged on the outer wall of the inner cannula 2; a guide block 9 which is slidably embedded in the locking chute is arranged on the inner wall of the outer sleeve 1; the left end pipe orifice of the inner cannula 2 is provided with a membrane mounting round hole; the screw end of the plug bolt 40 passes through the membrane installation round hole and is then screwed and installed on the left end of the inner insertion tube 2, and a liquid suction hole is axially arranged on the plug bolt 40; the head of the plug bolt 40 presses the hole edge of the film installation round hole on the left end pipe orifice of the inner insertion pipe 2; a channel plugging structure is arranged in the inner cannula 2;
the radial expansion structure comprises two central circular rings 35, an elastic supporting structure arranged on the circumference of the central circular rings 35 and each axial stay rod 3; the two central circular rings 35 are respectively sleeved on the outer sleeve 1 and the inner sleeve 2; each axial stay rod 3 is distributed and arranged on the periphery of the circumference of the central ring 35 through an elastic supporting structure, and the axial stay rods 3 are parallel to the axial direction of the inner insertion tube 2;
the umbrella-shaped structure is formed by circumferentially distributing U-shaped rods 5, one end of each U-shaped rod 5 is fixedly arranged on the central telescopic structure, and the other end of each U-shaped rod is fixedly arranged on the radial expansion structure; the expansion and retraction change of the umbrella-shaped structure is realized when the central telescopic structure is in telescopic change;
the conveyer is used for being inserted with the central telescopic structure, so that the relative drawing and inserting telescopic change driving of the inner cannula 2 and the outer cannula 1 is realized.
The size of the plugging device bracket can be adaptively adjusted by utilizing the radial expansion structure, and the plugging device bracket can be expanded according to the size of the fistula after being installed, so that the plugging of the fistula is more compact; the umbrella-shaped structures at the two ends are controlled to be unfolded or retracted by utilizing the relative expansion of the outer sleeve 1 and the inner sleeve 2, the umbrella-shaped structures can be contracted to be in a fusiform before insertion, the insertion is convenient to smoothly insert at the fistula, the two ends are unfolded in an umbrella shape after deformation, and the umbrella-shaped structures at the two ends can protect the fistula; the locking chute and the guide block 9 are matched to lock the inner cannula 2 and the outer cannula 1 after extending relatively, so that umbrella-shaped structures at two ends are kept in an open state; the channel plugging structure can realize the conduction and closing control of the interior of the inner cannula 2, so that leakage liquid at the fistula site can be conveniently sucked out, and the fistula site is kept clean and sanitary to avoid further infection.
Further, the locking chute is composed of an axial chute 6, an inclined chute 7 and a surrounding chute 8 which are communicated in sequence; the axial sliding groove 6 is parallel to the axial direction of the inner insertion tube 2; the surrounding sliding chute 8 is arranged around the circumferential outer wall of the inner cannula 2, and the surrounding sliding chute 8 is positioned in the outer sleeve 1; one end of the surrounding chute 8 is flush with the axial extension line of the axial chute 6, and the other end is communicated with the axial chute 6 through an inclined chute 7. The inner insertion tube 2 can be axially inserted into the outer sleeve 1 in an initial state by utilizing the axial sliding groove 6, so that umbrella-shaped structures at two ends shrink to be in a fusiform shape before insertion, and the insertion at a fistula can be smoothly carried out; when the outer sleeve 1 is pulled out of the inner cannula 2 relatively by utilizing the inclined sliding groove 7, the inner cannula 2 and the outer sleeve 1 relatively rotate, a certain rotary resilience force is realized under the elastic deformation action of the U-shaped rod 5, and therefore the guide block 9 moves to the position surrounding the sliding groove 8 to slide in rapidly, so that the inner cannula 2 and the outer sleeve 1 are locked relatively, and umbrella-shaped structures at two ends keep an opening state after being installed.
Further, the elastic supporting structure is composed of each diamond supporting frame 17 and each V-shaped supporting frame 16; one acute angle of each diamond-shaped supporting frame 17 is fixedly arranged on the outer circumference of the central circular ring 35, and the tip end part of each V-shaped supporting frame 16 is fixedly arranged on the other acute angle of each diamond-shaped supporting frame 17; the axial stay bars 3 are fixedly mounted on adjacent two ends of two adjacent V-shaped support frames 16. The diamond-shaped supporting frame 17 can have certain elastic deformation performance, and the size of the distribution circumference of each axial stay bar 3 distributed around the central ring 35 can be realized by matching with the elastic deformation effect of the V-shaped supporting frame 16, so that the self-adaptive adjustment of the size of the fistula is realized, and the fistula has better universality.
Further, in each U-shaped rod 5 positioned at the left side of the plugging device bracket, one end of the U-shaped rod 5 is butt-jointed and mounted on the left end of the axial stay rod 3 through a connecting section 4, and the other end of the U-shaped rod 5 is mounted on the circumferential edge of the left pipe orifice of the inner cannula 2 through the connecting section 4; in each U-shaped rod 5 positioned on the right side of the plugging device bracket, one end of the U-shaped rod 5 is butt-jointed and installed on the right end of the axial stay rod 3 through a connecting section 4, and the other end of the U-shaped rod 5 is installed on the circumferential edge of the right pipe orifice of the outer sleeve 1 through the connecting section 4; the cross sections of the connecting section 4 and the U-shaped rod 5 are flat rectangles, the thickness of the connecting section 4 is smaller than the thickness of the end part of the U-shaped rod 5, and the thickness of the U-shaped bending part of the U-shaped rod 5 is smaller than the thickness of the end part of the U-shaped rod 5. The two ends of the U-shaped rod 5 are fixedly installed by the connecting section 4 with smaller thickness, so that bending can be preferentially generated at the connecting section 4 during deformation, the requirement on the deformation of the U-shaped rod 5 is low, and the unfolded U-shaped rod is ensured to have a tidy and perfect umbrella-shaped structure; the connecting section 4 and the U-shaped rod 5 with the flat rectangular cross sections can be easily bent inwards to form a fusiform shape or outwards to form an umbrella shape when deformed, and the swinging is not easy to occur, so that the inner cannula 2 and the outer cannula 1 have stronger rebound turning force after relatively rotating, the guide block 9 is ensured to be locked in the surrounding chute 8, and the expanding state of umbrella-shaped structures at two ends is maintained.
Further, the channel plugging structure comprises a plugging disc 36 and four arc-shaped supporting bars 37 arranged at the circumferential edge of the plugging disc 36; a circle of limiting retainer ring 24 is arranged on the inner wall of the inner cannula 2; the plugging disc 36 is arranged in the inner insertion tube 2 through four arc-shaped supporting bars 37, and the plugging disc 36 is positioned at the left side of the limiting retainer ring 24; the four arc-shaped supporting bars 37 elastically press the plugging disc 36 to be clung to the left side edge of the limiting retainer ring 24 so as to realize plugging. The inner insertion tube 2 can be plugged by using the plugging disc 36, when the inner push rod 20 is pushed, the four arc-shaped supporting bars 37 are bent, and gaps are formed between the plugging disc 36 and the limiting retainer ring 24, so that the connection of a liquid suction channel is realized; and after the inner push rod 20 is released, the plugging disc 36 is tightly attached to the left side edge of the limiting retainer ring 24 under the elastic pressing action of the four arc-shaped supporting bars 37, so that plugging is realized again.
Further, the conveyor comprises an insertion tube 18, a push tube 19 and an inner push rod 20; the push tube 19 is inserted into the insertion tube 18 in a penetrating manner, and the inner push rod 20 is inserted into the push tube 19 in a penetrating manner; a first limit bump 21 is arranged on the left end outer pipe wall of the insertion pipe 18; a second limit bump 22 is arranged on the outer pipe wall at the left end of the pushing pipe 19; a circle of second limit ring grooves 11 are arranged on the inner wall of the pipe orifice at the right end of the inner cannula 2; a second notch 15 communicated with the second limit ring groove 11 is arranged on the end face of the right pipe orifice of the inner cannula 2; an inner pipe limit convex ring 12 is arranged at the pipe orifice at the right end of the outer sleeve 1, and a circle of first limit ring groove 13 is arranged on the inner ring surface of the inner pipe limit convex ring 12; a first notch 14 communicated with the first limit ring groove 13 is arranged on the end face of the right pipe orifice of the outer sleeve 1; the second limit bump 22 enters the second limit ring groove 11 from the second notch 15; the first limit bump 21 enters the first limit ring groove 13 from the first notch 14; one end of the inner push rod 20 extends into the inner pipe 2 through the push pipe 19 for pushing the plugging disc 36 away from the limit retainer ring 24. The axial movement of the insertion tube 18 and the pushing tube 19 can be realized by utilizing the cooperation of the second limit lug 22 and the second limit ring groove 11 and the cooperation of the first limit lug 21 and the first limit ring groove 13 to control the axial movement driving of the inner cannula 2 and the outer cannula 1, so that the deformation driving of the fusiform and umbrella-shaped structures is realized; the first notch 14 and the second notch 15 are utilized to facilitate the first limit bump 21 and the second limit bump 22 to enter the first limit ring groove 13 and the second limit ring groove 11; the inner push rod 20 is utilized to push the plugging disc 36 according to the requirement, so that the inner insertion tube 2 is communicated, a liquid suction channel is formed by a liquid suction hole, the inner insertion tube 2, the push tube 19 and the liquid suction butt joint tube 39, leakage liquid is sucked out through a negative pressure adsorber arranged at the liquid suction butt joint tube 39, and the plugging disc 36 can be plugged in the inner insertion tube 2 under the elastic action of the four arc-shaped supporting bars 37 after the inner push rod 20 is loosened.
Further, a rotation limiting chute 25 is axially arranged on the inner pipe wall of the insertion pipe 18; a circle of supporting convex rings 26 are arranged on the outer pipe wall of the pushing pipe 19, and the supporting convex rings 26 are close to the inner pipe wall of the inserting pipe 18; a rotation limit slider 27 which is slidably inserted into the rotation limit chute 25 is provided on the support collar 26. The relative rotation of the insertion tube 18 and the pushing tube 19 can be limited by utilizing the cooperation of the rotation limiting chute 25 and the rotation limiting slide block 27, so that the first limiting convex block 21 and the second limiting convex block 22 are ensured to be kept at opposite positions, and the first notch 14 and the second notch 15 at corresponding positions can be ensured to synchronously enter after the insertion; the support collar 26 can reduce the rattling of the push tube 19 within the insertion tube 18.
Further, a tension spring fixing convex ring 29 is arranged on the inner pipe wall of the insertion pipe 18; a tension spring 28 is sleeved on the pushing tube 19; one end of the tension spring 28 is fixed on the supporting convex ring 26, and the other end is fixed on the tension spring fixing convex ring 29. The left end of the push tube 19 can be pulled to move to the right side by the tension spring 28 in the initial state, so that the inner tube 2 is retracted into the outer tube 1, and the U-shaped rods 5 of the umbrella-shaped structures at the two ends are pulled to be close to the middle, so that a fusiform structure convenient for inserting into a fistula opening is formed.
Further, a side lug 30 is arranged on the outer pipe wall of the right end of the insertion pipe 18, and a hand-buckling hole 31 is arranged on the side lug 30; a handle frame 32 is arranged at the right end of the pushing tube 19; a limit disc 33 is arranged at the right end of the inner push rod 20; the inner push rod 20 is sleeved with a supporting pressure spring 34, and two ends of the supporting pressure spring 34 are respectively and elastically supported on the handle frame 32 and the limiting disc 33. The cooperation of the handle hole 31 and the handle frame 32 can facilitate the doctor to manually control the relative axial displacement of the insertion tube 18 and the pushing tube 19; the supporting pressure spring 34 can enable the inner push rod 20 to be far away from the plugging disc 36 when the pushing tube 19 enters the inner insertion tube 2, so that the plugging disc 36 is prevented from being pushed by mistake, and the pushing of the plugging disc 36 can be realized by pressing the limiting disc 33 when the plugging disc 36 is required to be pushed.
Further, a rotary seal 43 is provided at the right-hand nozzle of the push tube 19 for forming a seal between the inner wall of the right-hand nozzle of the push tube 19 and the outer wall of the inner push rod 20; a liquid suction butt joint pipe 39 is communicated with the right pipe wall of the pushing pipe 19; a bar-shaped supporting bar 23 is arranged on the outer wall of the right end of the inner push rod 20 along the axial direction thereof; the strip-shaped supporting bar 23 is supported on the left inner pipe wall of the pushing pipe 19; a sealing ring 38 is arranged on the left end outer wall of the pushing tube 19 and is used for forming a seal between the left end outer wall of the pushing tube 19 and the inner wall of the inner cannula 2. The rotary seal 43 can be used for sealing the right pipe orifice of the push pipe 19, and the sealing ring 38 can be used for sealing the left pipe orifice of the push pipe 19, so that the pumping of leakage liquid is realized by the pumping butt joint pipe 39, and the leakage liquid is pumped and discharged; the left end part of the inner push rod 20 and the push tube 19 are coaxially arranged by the strip-shaped support bar 23, so that liquid can be discharged during suction.
In the fistula plugging system disclosed by the invention, the whole structure of the plugging device bracket is made of degradable materials, such as poly-L-polylactic acid (PLLA), which is a degradable polymer material and is a degradable substance approved by a food and drug administration to be applicable to implantation into a human body, after the degradable plugging device bracket is implanted into the human body to fill the gap, human tissues slowly grow along the plugging device bracket, the human tissues grow very firmly for about 2-3 years, at the moment, the plugging device bracket is degraded into lactic acid and is digested and absorbed by the human body to generate water and carbon dioxide to be discharged out of the body without leaving any trace; the plugging film is also made of biodegradable materials, but the degradation period of the plugging film is longer than that of the plugging device bracket, so that the degradation of the blocking film can be ensured after the growth of the fistula is completed.
When the fistula plugging system disclosed by the invention is used, firstly, an umbrella-shaped structure at two ends of a plugging device bracket is covered with an elastic plugging film, the screw thread of a plug bolt 40 is screwed and installed on the left end of an inner insertion tube 2, and the hole edge of a film installation round hole is pressed on the left end tube orifice of the inner insertion tube 2, so that a complete plugging structure is formed; then the insertion tube 18 and the pushing tube 19 are correspondingly inserted into the outer sleeve 1 and the inner sleeve 2 respectively, so that the first limit bump 21 enters the first limit ring groove 13 from the first notch 14, and the second limit bump 22 enters the second limit ring groove 11 from the second notch 15; then through the cooperation of the handle frame 32 and the hand buckling hole 31, the push pipe 19 pulls the inner cannula 2 to retract into the outer cannula 1, thereby pulling each U-shaped rod 5 of the umbrella-shaped structures at the two ends to approach towards the middle, forming a shuttle-shaped structure which is convenient to insert into the fistula, and then inserting the shuttle-shaped structure into the fistula to be plugged; then, through the cooperation of the handle frame 32 and the hand buckling hole 31, the pushing tube 19 pushes the inner insertion tube 2 to extend outwards from the outer sleeve 1, so that the U-shaped rods 5 at the two ends are pushed to fold outwards to form an umbrella-shaped structure, and the umbrella-shaped structure is pressed on the side surfaces at the two ends of the fistula, so that the plugging requirement is met; the inner push rod 20 is pushed to extend rightwards to push the push tube 19 through the cooperation of the handle frame 32 and the limit disc 33, the left end part of the inner push rod 20 is utilized to push the blocking disc 36, so that the inner insertion tube 2 is communicated, a liquid suction channel is formed by a liquid suction hole, the inner insertion tube 2, the push tube 19 and the liquid suction butt joint tube 39, leakage liquid is sucked out through a negative pressure adsorber arranged at the liquid suction butt joint tube 39, and the cleaning and sanitation of the fistula hole are kept to avoid further infection; meanwhile, liquid medicine such as growth factors and the like can be pushed into the fistula through the liquid-pumping butt joint pipe 39 from the liquid-pumping channel, and the rapid growth recovery at the fistula site is promoted; finally, the insertion tube 18 is rotated, so that the first limit bump 21 is separated from the first limit ring groove 13 by the first notch 14, the second limit bump 22 is separated from the second limit ring groove 11 by the second notch 15, the insertion tube 18 and the pushing tube 19 are pulled out, and the accurate positioning and mounting of the plugging device bracket are completed; after the insertion tube 18 and the pushing tube 19 are pulled out, the plugging disc 36 plugs the liquid suction channel again under the elastic supporting action of the four arc-shaped supporting bars 37, and finally the plugging film at the insertion position is tightly closed.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A fistula plugging system, characterized in that: comprises an occluder bracket, an occluding membrane and a conveyer;
the plugging device bracket comprises a central telescopic structure, a radial expansion structure and umbrella-shaped structures at two ends; the plugging films are coated on umbrella-shaped structures at two ends of the plugging device bracket;
the central telescopic structure comprises a plug bolt (40), an outer sleeve (1) and an inner insert (2); the right end of the inner cannula (2) is inserted into the outer sleeve (1), and a locking chute is arranged on the outer wall of the inner cannula (2); a guide block (9) which is slidably embedded into the locking chute is arranged on the inner wall of the outer sleeve (1); the left end pipe orifice of the inner cannula (2) is provided with a membrane mounting round hole; the screw end of the plug bolt (40) passes through the membrane installation round hole and is then screwed and installed on the left end of the inner insertion pipe (2), and a liquid suction hole is axially arranged on the plug bolt (40); the head of the plug bolt (40) presses the hole edge of the film installation round hole on the left end pipe orifice of the inner insertion pipe (2); a channel plugging structure is arranged in the inner cannula (2);
the radial expansion structure comprises two central circular rings (35), an elastic supporting structure arranged on the circumference of the central circular rings (35) and each axial stay bar (3); the two central circular rings (35) are respectively sleeved on the outer sleeve (1) and the inner sleeve (2); each axial stay bar (3) is distributed on the periphery of the circumference of the central ring (35) through an elastic supporting structure, and the axial stay bars (3) are parallel to the axial direction of the inner insertion tube (2);
the umbrella-shaped structure is formed by circumferentially distributing U-shaped rods (5), one end of each U-shaped rod (5) is fixedly arranged on the central telescopic structure, and the other end of each U-shaped rod is fixedly arranged on the radial expansion structure; the expansion and retraction change of the umbrella-shaped structure is realized when the central telescopic structure is in telescopic change;
the conveyer is used for being inserted with the central telescopic structure, so that the relative drawing, inserting, telescopic and variable driving of the inner insertion pipe (2) and the outer sleeve (1) is realized.
2. The fistula aperture blocking system of claim 1, wherein: the locking chute consists of an axial chute (6), an inclined chute (7) and a surrounding chute (8) which are communicated in sequence; the axial sliding groove (6) is parallel to the axial direction of the inner insertion tube (2); the surrounding sliding chute (8) is arranged around the circumferential outer wall of the inner cannula (2), and the surrounding sliding chute (8) is positioned in the outer cannula (1); one end of the surrounding chute (8) is flush with the axial extension line of the axial chute (6), and the other end is communicated with the axial chute (6) through an inclined chute (7).
3. The fistula aperture blocking system of claim 1, wherein: the elastic supporting structure consists of each diamond supporting frame (17) and each V-shaped supporting frame (16); one acute angle of each diamond-shaped supporting frame (17) is fixedly arranged on the outer circumference of the central circular ring (35), and the tip end part of each V-shaped supporting frame (16) is fixedly arranged on the other acute angle of each diamond-shaped supporting frame (17); the axial stay bars (3) are fixedly arranged on two adjacent ends of two adjacent V-shaped supporting frames (16).
4. The fistula aperture blocking system of claim 1, wherein: in each U-shaped rod (5) positioned at the left side of the plugging device bracket, one end of the U-shaped rod (5) is butt-jointed and installed on the left end of the axial stay bar (3) through a connecting section (4), and the other end of the U-shaped rod (5) is installed on the circumferential edge of the left pipe orifice of the inner insertion pipe (2) through the connecting section (4); in each U-shaped rod (5) positioned on the right side of the plugging device bracket, one end of the U-shaped rod (5) is butt-jointed and installed on the right end of the axial stay bar (3) through a connecting section (4), and the other end of the U-shaped rod (5) is installed on the circumferential edge of the right pipe orifice of the outer sleeve (1) through the connecting section (4); the cross sections of the connecting section (4) and the U-shaped rod (5) are flat rectangles, the thickness of the connecting section (4) is smaller than the thickness of the end part of the U-shaped rod (5), and the thickness of the U-shaped bending part of the U-shaped rod (5) is smaller than the thickness of the end part of the U-shaped rod (5).
5. The fistula aperture blocking system of claim 1, wherein: the channel plugging structure comprises a plugging disc (36) and four arc-shaped supporting bars (37) arranged at the circumferential edge of the plugging disc (36); a circle of limiting retainer ring (24) is arranged on the inner wall of the inner cannula (2); the plugging disc (36) is arranged in the inner insertion pipe (2) through four arc-shaped supporting bars (37), and the plugging disc (36) is positioned at the left side of the limiting retainer ring (24); the four arc-shaped supporting bars (37) elastically press the plugging disc (36) to be clung to the left side edge of the limiting retainer ring (24) so as to realize plugging.
6. The fistula aperture blocking system of claim 5, wherein: the conveyor comprises an insertion tube (18), a pushing tube (19) and an inner push rod (20); the push tube (19) is inserted into the insertion tube (18) in a penetrating manner, and the inner push rod (20) is inserted into the push tube (19) in a penetrating manner; a first limit bump (21) is arranged on the outer pipe wall at the left end of the insertion pipe (18); a second limit bump (22) is arranged on the outer pipe wall at the left end of the pushing pipe (19); a circle of second limit ring grooves (11) are arranged on the inner wall of the pipe orifice at the right end of the inner cannula (2); a second notch (15) communicated with the second limit ring groove (11) is arranged on the end face of the right pipe orifice of the inner insertion pipe (2); an inner pipe limit convex ring (12) is arranged at the pipe orifice at the right end of the outer sleeve (1), and a circle of first limit ring groove (13) is arranged on the inner ring surface of the inner pipe limit convex ring (12); a first notch (14) communicated with the first limit ring groove (13) is arranged on the end face of the right pipe orifice of the outer sleeve (1); the second limit bump (22) enters the second limit ring groove (11) from the second notch (15); the first limit bump (21) enters the first limit ring groove (13) from the first notch (14); one end of the inner push rod (20) penetrates through the push tube (19) and stretches into the inner plug tube (2) to push the plugging disc (36) away from the limiting retainer ring (24).
7. The fistula aperture blocking system of claim 6, wherein: a rotation limiting chute (25) is axially arranged on the inner pipe wall of the insertion pipe (18); a circle of supporting convex rings (26) are arranged on the outer pipe wall of the pushing pipe (19), and the supporting convex rings (26) are close to the inner pipe wall of the inserting pipe (18); the supporting convex ring (26) is provided with a rotary limiting slide block (27) which is slidably embedded into the rotary limiting slide groove (25).
8. The fistula aperture blocking system of claim 7, wherein: a tension spring fixing convex ring (29) is arranged on the inner pipe wall of the insertion pipe (18); a tension spring (28) is sleeved on the pushing tube (19); one end of a tension spring (28) is fixed on the supporting convex ring (26), and the other end is fixed on the tension spring fixing convex ring (29).
9. The fistula aperture blocking system of claim 6, wherein: a side lug (30) is arranged on the outer pipe wall at the right end of the insertion pipe (18), and a hand-buckling hole (31) is arranged on the side lug (30); a handle frame (32) is arranged at the right end of the pushing tube (19); a limit disc (33) is arranged at the right end of the inner push rod (20); the inner push rod (20) is sleeved with a supporting pressure spring (34), and two ends of the supporting pressure spring (34) are respectively and elastically supported on the handle frame (32) and the limiting disc (33).
10. The fistula aperture blocking system of claim 9, wherein: a rotary seal (43) is arranged at the pipe orifice at the right end of the pushing pipe (19) and is used for forming a seal between the inner wall of the right pipe orifice of the pushing pipe (19) and the outer wall of the inner push rod (20); a liquid suction butt joint pipe (39) is communicated with the right pipe wall of the pushing pipe (19); a bar-shaped supporting bar (23) is arranged on the outer wall of the right end of the inner push rod (20) along the axial direction; the strip-shaped supporting bar (23) is supported on the inner pipe wall at the left end of the pushing pipe (19); a sealing ring (38) is arranged on the outer wall of the left end of the pushing tube (19) and is used for forming a seal between the outer wall of the left end of the pushing tube (19) and the inner wall of the inner tube (2).
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| CN201910611585.3A CN110477969B (en) | 2019-07-08 | 2019-07-08 | Fistula plugging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910611585.3A CN110477969B (en) | 2019-07-08 | 2019-07-08 | Fistula plugging system |
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| CN110477969B true CN110477969B (en) | 2023-07-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2087906A1 (en) * | 1992-01-22 | 1993-07-23 | Arterial Vascular Engineering, Inc. | System and method for the precutaneous transluminal delivery and retrieval of a prosthetic occluder |
| JPH07275369A (en) * | 1994-04-15 | 1995-10-24 | N & M:Kk | Assembly for internal fistula strictured part in bile duct |
| CN101795628A (en) * | 2007-07-12 | 2010-08-04 | Aga医药有限公司 | The vascular internal congestion device of percutaneous catheter guiding |
| CN109498074A (en) * | 2019-01-04 | 2019-03-22 | 上海形状记忆合金材料有限公司 | Method Wholly-degradable plugging device dedicated driving means and its connect with plugging device |
| CN109758205A (en) * | 2018-11-02 | 2019-05-17 | 江苏省人民医院 | A kind of esophago-tracheal fistula plug rack |
| CN210903184U (en) * | 2019-07-08 | 2020-07-03 | 江苏省肿瘤医院 | Fistula suction plugging system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060135985A1 (en) * | 2004-12-21 | 2006-06-22 | Cox Daniel L | Vulnerable plaque modification methods and apparatuses |
| JP4481880B2 (en) * | 2005-06-03 | 2010-06-16 | オリンパスメディカルシステムズ株式会社 | Stent placement device |
| EP2571428B1 (en) * | 2010-05-19 | 2019-04-03 | Cook Medical Technologies LLC | Devices and methods useful for sealing bodily openings |
| US10716552B2 (en) * | 2012-12-10 | 2020-07-21 | Peter Osypka Stiftung | Implantable sealing device |
-
2019
- 2019-07-08 CN CN201910611585.3A patent/CN110477969B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2087906A1 (en) * | 1992-01-22 | 1993-07-23 | Arterial Vascular Engineering, Inc. | System and method for the precutaneous transluminal delivery and retrieval of a prosthetic occluder |
| JPH07275369A (en) * | 1994-04-15 | 1995-10-24 | N & M:Kk | Assembly for internal fistula strictured part in bile duct |
| CN101795628A (en) * | 2007-07-12 | 2010-08-04 | Aga医药有限公司 | The vascular internal congestion device of percutaneous catheter guiding |
| CN109758205A (en) * | 2018-11-02 | 2019-05-17 | 江苏省人民医院 | A kind of esophago-tracheal fistula plug rack |
| CN109498074A (en) * | 2019-01-04 | 2019-03-22 | 上海形状记忆合金材料有限公司 | Method Wholly-degradable plugging device dedicated driving means and its connect with plugging device |
| CN210903184U (en) * | 2019-07-08 | 2020-07-03 | 江苏省肿瘤医院 | Fistula suction plugging system |
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