CN210903184U

CN210903184U - Fistula suction plugging system

Info

Publication number: CN210903184U
Application number: CN201921056263.9U
Authority: CN
Inventors: 陈天鸣; 陈仕林; 任琦蓉
Original assignee: Jiangsu Cancer Hospital
Current assignee: Jiangsu Cancer Hospital
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-07-03
Anticipated expiration: 2029-07-08

Abstract

The utility model provides a suction plugging system for fistula orifices, which comprises a plugging device bracket and a conveyor; the occluder bracket comprises a central telescopic structure, a radial expansion structure and umbrella-shaped structures at two ends; the conveyor is used for being inserted into the central telescopic structure, so that relative telescopic change driving of the inner inserting pipe and the outer sleeve pipe is realized. The suction plugging system for the fistula orifice 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 orifice after installation, so that the fistula orifice is plugged more tightly; the umbrella-shaped structures at the two ends are controlled to be unfolded or retracted by utilizing the relative stretching of the outer sleeve and the inner inserting tube, the umbrella-shaped structures can be in a shuttle shape before the insertion, the insertion at the fistula is convenient to smoothly, the two ends are unfolded in an umbrella shape after deformation, and the protection of the umbrella-shaped structures at the two ends at the fistula is realized.

Description

Fistula suction plugging system

Technical Field

The utility model relates to a medical appliance, especially a fistula suction plugging system.

Background

At present, in the treatment process of fistula of various organs, conservative treatment is preferred, such as comprehensive treatment through anti-infection, digestive juice secretion inhibition, internal and external drainage and decompression in the chest and abdominal cavity or through various natural orifices, nutrition enhancement, tissue repair promotion, granulation growth and the like, and self-healing is expected, the period is long, and patients are very painful. Some fistula holes are repaired by secondary operations, but the operation difficulty is high, the risk is high, the success rate is low, and the repaired fistula holes still have the risk of bleeding and re-fistula.

In more common fistula orifices, such as esophago-bronchial fistula, esophagogastric anastomotic fistula, residual gastric fistula, gastrointestinal anastomotic fistula, various intestinal fistulas, vesical vaginal fistula and rectovaginal fistula, fistula blocking is an important measure, so that the fistula orifice is temporarily closed, continuity of digestive tracts, respiratory tracts, urinary tracts and the like is recovered, the content does not overflow any more, and the corrosion of the content to surrounding tissues and the loss of body fluid and fatal complications such as infection, heavy bleeding and the like caused by the content are reduced. After the fistula is blocked, a relatively clean growth environment is created, the growth and healing of tissues at the fistula 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 quickly restored. The common fistula plugging methods at present are: for small fissured fistulas, various medical glue and plugging means such as clamping closure and the like are applied through the intervention ways such as a gastrointestinal endoscope, a bronchoscope or a cystoscope and the like, and some can be successful; for larger defects of the fistula of the hollow viscera, after infection and inflammation are effectively controlled, the fistula is sutured, clamped or placed on a bracket by adopting an operation or an intervention way such as a gastrointestinal endoscope, a bronchoscope or a cystoscope, but the treatment effect is not exact after the fistula is blocked, and the fistula is easily subjected to a plurality of interference factors, so that complications such as infection, bleeding, local necrosis, expansion of the fistula and the like around the fistula are easily caused; after difficult plugging or failure of plugging, only one stage of operation fistulization and drainage can be selected, and then two stages of stoma repair and anastomosis are carried out, so that the treatment time is long, the pain of a patient is caused, and complications such as stoma stenosis, bleeding and infection and the like and the risk of repaired stoma reemplification are difficult to avoid during and after the operation. The appearance of the occluder enables a plurality of patients with congenital heart diseases such as atrioventricular defect, main pulmonary fistula and the like to obtain a very good curative effect, avoids huge damage of cardiac surgery, and the improved occluder is also applied to treatment of hollow organ fistula with infection and corrosion states at present, but the existing occluder only performs fistula orifice occlusion, so that two sides of a fistula orifice are isolated, but leaked or slowly leaked liquid cannot be discharged, further infection or corrosion is easily caused, and in addition, the occluders cannot perform self-adaptive size adjustment according to field occlusion requirements, and the universality is poor. Therefore, there is a need for a fistula suction plugging system, which has a certain size expansion performance, satisfies the self-adaptive size adjustment, and can suck out the leaked liquid to keep the fistula clean and sanitary to avoid further infection.

Disclosure of Invention

The utility model aims to provide a: the utility model provides a fistula suction plugging system can have certain big or small inflation performance, satisfies the self-adaptation size and adjusts, and can come out with the liquid suction of leaking, keeps the clean health of fistula and avoids causing further infection.

In order to realize the aim of the utility model, the utility model provides a suction plugging system for fistula orifices, which comprises a plugging device bracket, a plugging membrane and a conveyor;

the occluder bracket comprises a central telescopic structure, a radial expansion structure and umbrella-shaped structures at two ends; the plugging film is coated on the umbrella-shaped structures at the two ends of the plugging device bracket;

the central telescopic structure comprises a plug bolt, an outer sleeve and an inner inserting pipe; the right end of the inner insertion tube is inserted in the outer sleeve, and a locking sliding groove is arranged on the outer wall of the inner insertion tube; the inner wall of the outer sleeve is provided with a guide block which is embedded into the locking sliding groove in a sliding manner; a membrane mounting round hole is formed in the left end pipe orifice of the inner insertion pipe by the plugging membrane; the end part of the screw rod of the plug bolt penetrates through the membrane mounting round hole and then is screwed on the left end of the inner inserting tube, and a liquid pumping hole is axially formed in the plug bolt; the head of the plug bolt presses the hole edge of the membrane mounting circular 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 supporting rod; the two central circular rings are respectively sleeved on the outer sleeve and the inner inserting pipe; each axial stay bar is distributed on the periphery of the central ring through an elastic supporting structure and is parallel to the axial direction of the inner inserting tube;

the umbrella-shaped structure is formed by distributing all the U-shaped rods in a circumferential manner, 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; when the central telescopic structure is changed in a telescopic way, the umbrella-shaped structure is expanded and retracted;

the conveyor is used for being inserted into the central telescopic structure, so that the relative drawing, inserting, stretching and changing driving of the inner inserting pipe and the outer sleeve pipe is realized.

Furthermore, the locking chute consists of an axial chute, an oblique chute and a surrounding chute which are sequentially communicated; the axial sliding groove is parallel to the axial direction of the inner inserting tube; the surrounding sliding groove is arranged around the circumferential outer wall of the inner inserting pipe and is positioned in the outer sleeve; one end of the surrounding sliding groove is flush with the axial extension line of the axial sliding groove, and the other end of the surrounding sliding groove is communicated with the axial sliding groove through the oblique sliding groove.

Furthermore, the elastic supporting structure is composed of each rhombic supporting frame and each V-shaped supporting frame; an acute angle of each rhombic supporting frame is fixedly arranged on the outer circumference of the central ring, and the tip end of each V-shaped supporting frame is fixedly arranged on the other acute angle of each rhombic supporting frame; the axial stay bars are fixedly arranged on the two adjacent ends of the two adjacent V-shaped support frames.

Furthermore, in each U-shaped rod positioned on the left side of the occluder bracket, one end of each U-shaped rod is installed on the left end of the axial stay bar in a butt joint mode 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 insertion pipe through the connecting section; in each U-shaped rod positioned on the right side of the occluder bracket, one end of each U-shaped rod is installed on the right end of the axial stay bar in a butt joint mode through a connecting section, and the other end of each U-shaped rod is installed on the circumferential edge of the right pipe orifice of the outer sleeve pipe through the connecting section; the cross-section of linkage segment and U-shaped pole is flat rectangle, and the thickness of linkage segment is less than the tip thickness of U-shaped pole, and the thickness of the U-shaped bending department of U-shaped pole is less than the tip thickness of U-shaped pole.

Furthermore, 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 retainer ring is arranged on the inner wall of the inner insertion pipe; the plugging disc is arranged in the inner inserting tube through four arc-shaped supporting bars and is positioned on the left side of the limiting retainer ring; the four arc-shaped supporting bars elastically press the plugging disc to cling to the left side edge of the limiting retainer ring to realize plugging.

Further, the conveyor comprises an insertion pipe, a pushing pipe and an inner pushing rod; the pushing pipe is inserted in the inserting pipe in a penetrating way, and the inner pushing rod is inserted in the pushing pipe in a penetrating way; a first limiting lug is arranged on the outer pipe wall at the left end of the insertion pipe; a second limiting lug is arranged on the outer pipe wall at the left end of the push pipe; a circle of second limiting ring groove is formed in the inner wall of the right-end pipe orifice of the inner insertion pipe; a second notch communicated with the second limiting ring groove is formed in the end surface of the right pipe orifice of the inner insertion pipe; an inner pipe limiting convex ring is arranged at the right end pipe orifice of the outer sleeve, and a circle of first limiting ring groove is arranged on the inner ring surface of the inner pipe limiting convex ring; a first notch communicated with the first limiting ring groove is arranged on the end surface of the right pipe orifice of the outer sleeve; the second limiting lug enters the second limiting ring groove from the second notch; the first limiting lug enters the first limiting ring groove from the first notch; one end of the inner push rod penetrates through the push pipe and extends into the inner insert pipe, and the inner push rod is used for pushing the plugging disc to be far away from the limiting check ring.

Furthermore, a rotation limiting sliding groove is axially arranged on the inner pipe wall of the insertion pipe; a circle of supporting convex ring is arranged on the outer pipe wall of the push pipe and is close to the inner pipe wall of the insert pipe; the supporting convex ring is provided with a rotary limiting slide block which is embedded into the rotary limiting slide groove in a sliding manner.

Furthermore, a tension spring fixing convex ring is arranged on the inner pipe wall of the insertion pipe; a tension spring is sleeved on the pushing pipe; 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.

Furthermore, a side lug is arranged on the outer tube wall at the right end of the insertion tube, and a hand-buckle hole is arranged on the side lug; a handle frame is arranged at the right end of the push pipe; a limiting 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.

Furthermore, a rotary seal is arranged at the right-end pipe orifice of the pushing pipe and used for forming a seal between the inner wall of the right-end pipe orifice of the pushing pipe and the outer wall of the inner push rod; the tube wall at the right end of the push tube is communicated with a liquid pumping butt joint tube; a bar-shaped support 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 bar-shaped supporting bar is supported on the inner pipe wall at the left end of the push pipe; and a sealing ring is arranged on the outer pipe wall at the left end of the push pipe and used for sealing between the outer wall at the left end of the push pipe and the inner wall of the inner inserting pipe.

The beneficial effects of the utility model reside in that: the size of the occluder support can be adjusted in a self-adaptive mode by utilizing the radial expansion structure, and the occluder support can expand according to the size of the fistula after being installed, so that the fistula can be occluded tightly; the umbrella-shaped structures at two ends are controlled to be unfolded or retracted by utilizing the relative expansion of the outer sleeve and the inner inserting tube, the umbrella-shaped structures can be in a shuttle shape before insertion, the smooth insertion at the fistula is facilitated, the umbrella-shaped structures at two ends are unfolded after deformation, and the protection of the umbrella-shaped structures at two ends at the fistula is realized; the locking chute is matched with the guide block, so that the inner cannula and the outer cannula can be locked after being relatively extended out, and the umbrella-shaped structures at the two ends are kept in an opening state; utilize passageway block structure can realize the inside switch on and the closed control of interior intubate, be convenient for go out the leakage liquid suction of fistula, keep the sanitation and hygiene of fistula to avoid causing further infection.

Drawings

Fig. 1 is a schematic structural view of the occluder bracket of the present invention in the occluding state;

fig. 2 is a schematic structural view of the occluder bracket of the present invention in an initial state;

fig. 3 is a schematic structural view of the occluder bracket of the present invention in an inserted state;

fig. 4 is a schematic sectional structure view of the occluder bracket of the present invention at the central ring;

fig. 5 is a schematic design structure diagram of the first notch and the second notch of the occluder bracket of the present invention;

fig. 6 is a schematic structural diagram of the plugging device of the present invention.

Detailed Description

The technical solution 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 utility model discloses a fistula suction plugging system includes: the plugging device comprises a plugging device bracket, a plugging film and a conveyor;

the central telescopic structure comprises a plug bolt 40, an outer sleeve 1 and an inner inserting tube 2; the right end of the inner insertion tube 2 is inserted into the outer sleeve 1, and a locking sliding groove is arranged on the outer wall of the inner insertion tube 2; the inner wall of the outer sleeve 1 is provided with a guide block 9 which is embedded into the locking sliding groove in a sliding manner; the left end pipe orifice of the inner insertion pipe 2 is provided with a circular membrane mounting hole by the plugging membrane; the end part of the screw rod of the plug bolt 40 penetrates through the membrane mounting round hole and then is screwed on the left end of the inner inserting tube 2, and a liquid pumping hole is axially arranged on the plug bolt 40; the head of the plug bolt 40 presses the hole edge of the membrane mounting circular 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 rings 35, elastic support structures arranged on the circumferences of the central rings 35 and each axial strut 3; the two central rings 35 are respectively sleeved on the outer sleeve 1 and the inner inserting tube 2; each axial stay bar 3 is distributed on the periphery 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 inserting tube 2;

the umbrella-shaped structure is formed by distributing all the U-shaped rods 5 in a circumferential manner, 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 5 is fixedly arranged on the radial expansion structure; when the central telescopic structure is changed in a telescopic way, the umbrella-shaped structure is expanded and retracted;

the conveyor is used for being inserted into the central telescopic structure, so that the relative drawing, inserting, stretching and changing driving of the inner inserting tube 2 and the outer sleeve 1 is realized.

The size of the occluder support can be adjusted in a self-adaptive mode by utilizing the radial expansion structure, and the occluder support can expand according to the size of the fistula after being installed, so that the fistula can be occluded tightly; the umbrella-shaped structures at two ends are controlled to be unfolded or retracted by utilizing the relative expansion of the outer sleeve 1 and the inner insertion tube 2, the umbrella-shaped structures can be contracted into a shuttle shape before insertion, the insertion at the fistula is convenient, the umbrella-shaped structures at two ends are unfolded after deformation, and the protection of the umbrella-shaped structures at two ends at the fistula is realized; the locking can be carried out after the inner cannula 2 and the outer cannula 1 relatively extend out by utilizing the matching of the locking sliding chute and the guide block 9, so that the umbrella-shaped structures at the two ends are kept in an opening state; utilize passageway block structure can realize interior intubate 2 inside switch on and closed control, be convenient for come out the leakage liquid suction of fistula, keep the clean health of fistula and avoid causing further infection.

Furthermore, the locking chute is composed of an axial chute 6, an oblique chute 7 and a surrounding chute 8 which are sequentially communicated; the axial sliding groove 6 is parallel to the axial direction of the inner inserting tube 2; the surrounding sliding groove 8 is arranged around the circumferential outer wall of the inner inserting tube 2, and the surrounding sliding groove 8 is positioned in the outer sleeve 1; one end of the surrounding sliding groove 8 is flush with the axial extension line of the axial sliding groove 6, and the other end of the surrounding sliding groove is communicated with the axial sliding groove 6 through the oblique sliding groove 7. The axial chute 6 is utilized to ensure that the inner insertion tube 2 can be axially inserted into the outer sleeve 1 in an initial state, so that umbrella-shaped structures at two ends are contracted into a fusiform shape before being inserted, and the smooth insertion at a fistula is facilitated; when the outer sleeve 1 can be relatively pulled out from the inner insertion tube 2 by utilizing the oblique sliding groove 7, the inner insertion tube 2 and the outer sleeve 1 can relatively rotate, certain rotary resilience force is realized under the elastic deformation action of the U-shaped rod 5, and the guide block 9 moves to the position surrounding the sliding groove 8 and rapidly slides in, so that the relative locking of the inner insertion tube 2 and the outer sleeve 1 is realized, and the umbrella-shaped structures at two ends are kept in a spreading state after being installed.

Further, the elastic supporting structure is composed of each diamond-shaped supporting frame 17 and each V-shaped supporting frame 16; one acute angle of each rhombic supporting frame 17 is fixedly arranged on the outer circumference of the central ring 35, and the tip end part of each V-shaped supporting frame 16 is fixedly arranged on the other acute angle of each rhombic supporting frame 17; the axial stay bars 3 are fixedly arranged on two adjacent ends of two adjacent V-shaped support frames 16. The rhombic supporting frames 17 have certain elastic deformation performance, and the elastic deformation effect of the V-shaped supporting frames 16 is matched, so that the distribution circumference of each axial supporting rod 3 distributed around the central ring 35 can be adjusted, the size of the fistula pore can be adjusted in a self-adaptive mode, and the fistula pore has good universality.

Furthermore, in each U-shaped rod 5 positioned on the left side of the occluder 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 the connecting section 4, and the other end of the U-shaped rod 5 is installed on the circumferential edge of the left tube opening of the inner insertion tube 2 through the connecting section 4; in each U-shaped rod 5 positioned on the right side of the occluder bracket, one end of the U-shaped rod 5 is in butt joint with 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 arranged 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 that of the end part of the U-shaped rod 5, and the thickness of the U-shaped bent part of the U-shaped rod 5 is smaller than that of the end part of the U-shaped rod 5. The two ends of the U-shaped rod 5 are fixedly installed by utilizing 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 umbrella-shaped structure is ensured to be tidier and better after being unfolded; utilize the cross-section to be the linkage segment 4 and the U-shaped pole 5 of flat rectangle can be easy inwards buckling when warping and be fusiformis or outwards buckle and be umbelliform, and be difficult to appear the swing and make including intubate 2 and outer tube 1 relative rotation after have stronger bounce-back gyroscopic force, ensure guide block 9 locks in encircleing spout 8, keep the state of strutting of the umbelliform structure at both ends.

Further, the channel blocking structure comprises a blocking disk 36 and four arc-shaped supporting bars 37 arranged at the circumferential edge of the blocking disk 36; a circle of limiting retainer ring 24 is arranged on the inner wall of the inner insertion pipe 2; the plugging disc 36 is arranged in the inner intubation 2 through four arc-shaped supporting bars 37, and the plugging disc 36 is positioned at the left side of the limit retainer ring 24; four arc-shaped supporting bars 37 elastically press the plugging disc 36 to cling to the left side edge of the limiting retainer ring 24 to realize plugging. The inner cannula 2 can be blocked by the blocking disc 36, when the inner push rod 20 pushes, the four arc-shaped supporting bars 37 are bent, and a gap is formed between the blocking disc 36 and the limiting retainer ring 24, so that the conduction of the liquid pumping channel is realized; after the inner push rod 20 is released, the blocking disc 36 is tightly attached to the left side edge of the limit retainer ring 24 under the elastic pressing action of the four arc-shaped supporting bars 37 to realize blocking again.

Further, the carrier comprises an insertion tube 18, a push tube 19 and an inner push rod 20; the pushing pipe 19 is inserted in the inserting pipe 18 in a penetrating way, and the inner push rod 20 is inserted in the pushing pipe 19 in a penetrating way; a first limiting lug 21 is arranged on the outer pipe wall at the left end of the insertion pipe 18; a second limiting lug 22 is arranged on the outer pipe wall at the left end of the push pipe 19; a circle of second limiting ring groove 11 is arranged on the inner wall of the right-end pipe orifice of the inner insertion pipe 2; a second gap 15 communicated with the second limiting ring groove 11 is arranged on the end surface of the right pipe orifice of the inner inserting pipe 2; an inner pipe limiting convex ring 12 is arranged at the right end pipe orifice of the outer sleeve 1, and a circle of first limiting ring groove 13 is arranged on the inner ring surface of the inner pipe limiting convex ring 12; a first gap 14 communicated with the first limit ring groove 13 is arranged on the end surface of the right pipe orifice of the outer sleeve 1; the second limiting lug 22 enters the second limiting ring groove 11 from the second notch 15; the first limiting bump 21 enters the first limiting ring groove 13 from the first notch 14; one end of the inner push rod 20 extends into the inner insert 2 through the push tube 19 and is used for pushing the blocking disc 36 to be far away from the limit stop ring 24. By utilizing the matching of the second limiting bump 22 and the second limiting ring groove 11 and the matching of the first limiting bump 21 and the first limiting ring groove 13, the axial movement of the insertion tube 18 and the pushing tube 19 can be realized to control the axial movement driving of the insertion tube 2 and the outer sleeve 1, thereby realizing the deformation driving of a fusiform structure and an umbrella-shaped structure; the first gap 14 and the second gap 15 are used for facilitating the first limiting lug 21 and the second limiting lug 22 to enter the first limiting ring groove 13 and the second limiting ring groove 11; the inner push rod 20 can be used for pushing the blocking disc 36 as required, so that the inner part of the inner insertion tube 2 is communicated, a liquid pumping channel is formed by the liquid pumping hole, the inner insertion tube 2, the push tube 19 and the liquid pumping butt joint tube 39, a negative pressure adsorber is arranged at the liquid pumping butt joint tube 39 to pump out leakage liquid, and the blocking disc 36 can be blocked 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 sliding groove 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 push pipe 19, and the supporting convex rings 26 are close to the inner pipe wall of the insertion pipe 18; a rotation-limiting slide block 27 slidably fitted into the rotation-limiting slide groove 25 is provided on the support flange 26. The relative rotation of the insertion tube 18 and the pushing tube 19 can be limited by the matching of the rotation limiting sliding groove 25 and the rotation limiting sliding block 27, the first limiting lug 21 and the second limiting lug 22 are ensured to be kept at opposite positions, and the inserted insertion tube can synchronously enter the first notch 14 and the second notch 15 at corresponding positions; the use of the support collar 26 reduces the play of the thrust tube 19 in 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 pipe 19; one end of a tension spring 28 is fixed to the support collar 26, and the other end is fixed to a tension spring fixing collar 29. The left end of the push tube 19 can be pulled to move to the right by the tension spring 28 in the initial state, so that the inner cannula 2 retracts into the outer cannula 1, and the U-shaped rods 5 of the umbrella-shaped structures at the two ends are pulled to be close to the middle, thereby forming a fusiform structure which is convenient to insert into the fistula.

Furthermore, a side lug 30 is arranged on the outer tube wall at the right end of the insertion tube 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 push pipe 19; a limiting disc 33 is arranged at the right end of the inner push rod 20; a supporting compression spring 34 is sleeved on the inner push rod 20, and two ends of the supporting compression spring 34 are respectively and elastically supported on the handle frame 32 and the limiting disc 33. The cooperation of the hand-buckling 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 compression spring 34 can be used for enabling the inner push rod 20 to be far away from the plugging disc 36 when the pushing pipe 19 enters the inner inserting pipe 2, the plugging disc 36 is prevented from being pushed by mistake, and the pushing can be realized by pressing the limiting disc 33 when the plugging disc 36 needs to be pushed.

Further, a rotary seal 43 is arranged at the right-end pipe orifice of the push pipe 19 and used for forming a seal between the inner wall of the right pipe orifice of the push pipe 19 and the outer wall of the inner push rod 20; a liquid pumping butt joint pipe 39 is communicated with the right pipe wall of the push pipe 19; a bar-shaped support bar 23 is arranged on the outer wall of the right end of the inner push rod 20 along the axial direction; the bar-shaped support strip 23 is supported on the inner pipe wall at the left end of the push pipe 19; a sealing ring 38 is arranged on the outer wall of the left end of the push pipe 19 for sealing between the outer wall of the left end of the push pipe 19 and the inner wall of the inner insert pipe 2. The sealing at the right pipe orifice of the pushing pipe 19 can be realized by the rotary seal 43, the sealing at the left pipe orifice of the pushing pipe 19 can be realized by the seal ring 38, so that the pumping of the leakage liquid is realized by the pumping butt joint pipe 39, and the leakage liquid is pumped and discharged; the bar-shaped support strip 23 can realize that the left end part of the inner push rod 20 and the push pipe 19 are coaxially arranged, so that liquid is conveniently discharged during suction.

The utility model discloses an among the fistula suction plugging system, occluder support overall structure is made by degradable material, for example poly levorotatory polylactic acid (PLLA), poly levorotatory polylactic acid (PLLA) is a degradable macromolecular material, it is the degradable material that food and drug administration approved can be applied to implanting the human body, after degradable occluder support implantation human body fills the vacancy, human tissue can slowly grow along occluder support, about 2-3 years, human self tissue has grown very firmly, occluder support has degraded to lactic acid this moment, digested and absorbed by the human body, produce water and carbon dioxide and discharge outside, do not leave any vestige; the plugging membrane is also made of biodegradable materials, but the degradation cycle of the plugging membrane is longer than that of the plugging device bracket, so that the barrier membrane can be degraded after the fistula orifice grows.

When the fistula suction plugging system is used, firstly, the umbrella-shaped structures at the two ends of the plugging device bracket are covered with the elastic plugging films, the threads of the plug bolt 40 are screwed and installed on the left end of the inner insertion tube 2, and the hole edge of the film installation round hole is pressed on the left end pipe orifice of the inner insertion tube 2, so that a complete plugging structure is formed; then the inserting tube 18 and the pushing tube 19 are respectively and correspondingly inserted into the outer sleeve 1 and the inner inserting tube 2, so that the first limiting convex block 21 enters the first limiting ring groove 13 from the first notch 14, and meanwhile, the second limiting convex block 22 enters the second limiting ring groove 11 from the second notch 15; then, through the matching of the handle frame 32 and the hand buckle hole 31, the push tube 19 pulls the inner insertion tube 2 to retract into the outer sleeve 1, so that each U-shaped rod 5 with umbrella-shaped structures at two ends is pulled to approach towards the middle to form a fusiform structure which is convenient to insert into the fistula hole, and then the fusiform structure is inserted into the fistula hole to be plugged; then, through the matching of the handle frame 32 and the hand buckle hole 31, the push tube 19 pushes the inner insertion tube 2 to extend outwards from the outer sleeve 1, so that each U-shaped rod 5 at two ends is pushed to be turned outwards to form an umbrella-shaped structure, and the umbrella-shaped structure is pressed on the side surfaces of two ends of the fistula hole to meet the plugging requirement; then, the inner push rod 20 is pressed to extend out of the push tube 19 rightwards through the matching use of the handle frame 32 and the limiting disc 33, the left end part of the inner push rod 20 is used for pushing the blocking disc 36, the inner inserting tube 2 is conducted, a liquid pumping channel is formed by the liquid pumping hole, the inner inserting tube 2, the push tube 19 and the liquid pumping butt joint tube 39, and accordingly, leakage liquid is pumped out through a negative pressure absorber arranged at the liquid pumping butt joint tube 39, and the fistula is kept clean and sanitary to avoid further infection; meanwhile, liquid medicines such as growth factors and the like can be pushed inwards from the liquid extraction channel through the liquid extraction butt joint pipe 39, so that the quick recovery growth of the fistula is promoted; finally, the inserting tube 18 is rotated, so that the first limiting lug 21 is separated from the first limiting ring groove 13 through the first notch 14, meanwhile, the second limiting lug 22 is separated from the second limiting ring groove 11 through the second notch 15, the inserting tube 18 is pulled out, the pushing tube 19 is pushed, and the accurate positioning and installation of the plugging device support are completed; after the insertion tube 18 and the push tube 19 are pulled out, the blocking disc 36 blocks the liquid extraction channel again under the elastic supporting action of the four arc-shaped supporting strips 37, and finally the blocking membrane at the insertion position is fastened and closed.

As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A fistula suction plugging system characterized in that: comprises a stopper bracket, a stopper film and a conveyor;

the central telescopic structure comprises a plug bolt (40), an outer sleeve (1) and an inner inserting pipe (2); the right end of the inner insertion tube (2) is inserted into the outer sleeve (1), and a locking sliding groove is arranged on the outer wall of the inner insertion tube (2); a guide block (9) which is embedded into the locking sliding groove in a sliding manner is arranged on the inner wall of the outer sleeve (1); the left end pipe orifice of the inner insertion pipe (2) is provided with a circular membrane mounting hole by the plugging membrane; the end part of a screw rod of the plug bolt (40) penetrates through the membrane mounting round hole and then is screwed and mounted on the left end of the inner inserting pipe (2), and a liquid pumping hole is formed in the plug bolt (40) along the axial direction; the head of the plug bolt (40) presses the hole edge of the membrane mounting circular hole on the left end pipe orifice of the inner insertion pipe (2); a channel plugging structure is arranged in the inner inserting pipe (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 support rod (3); the two central circular rings (35) are respectively sleeved on the outer sleeve (1) and the inner inserting tube (2); each axial stay bar (3) is distributed on the periphery 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 inserting tube (2);

the umbrella-shaped structure is formed by distributing all the U-shaped rods (5) in a circumferential manner, 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; when the central telescopic structure is changed in a telescopic way, the umbrella-shaped structure is expanded and retracted;

the conveyor is used for being inserted into the central telescopic structure, so that the relative drawing, inserting, stretching and changing driving of the inner inserting pipe (2) and the outer sleeve pipe (1) is realized.

2. The fistula aspiration closure system of claim 1, wherein: the locking chute consists of an axial chute (6), an oblique chute (7) and a surrounding chute (8) which are sequentially communicated; the axial sliding chute (6) is parallel to the axial direction of the inner inserting tube (2); the surrounding sliding groove (8) is arranged around the circumferential outer wall of the inner inserting pipe (2), and the surrounding sliding groove (8) is positioned in the outer sleeve (1); one end of the surrounding sliding groove (8) is flush with the axial extension line of the axial sliding groove (6), and the other end of the surrounding sliding groove is communicated with the axial sliding groove (6) through the oblique sliding groove (7).

3. The fistula aspiration closure system of claim 1, wherein: the elastic supporting structure is composed of diamond supporting frames (17) and V-shaped supporting frames (16); one acute angle of each rhombic supporting frame (17) is fixedly arranged on the outer circumference of the central ring (35), and the tip end part of each V-shaped supporting frame (16) is fixedly arranged on the other acute angle of each rhombic supporting frame (17); the axial stay bars (3) are fixedly arranged on two adjacent ends of two adjacent V-shaped support frames (16).

4. The fistula aspiration closure system of claim 1, wherein: in each U-shaped rod (5) positioned on the left side of the occluder bracket, one end of each U-shaped rod (5) is installed on the left end of the axial stay bar (3) in a butt joint mode through the connecting section (4), and the other end of each 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 occluder bracket, one end of each U-shaped rod (5) is installed on the right end of the axial stay bar (3) in a butt joint mode through the connecting section (4), and the other end of each 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 that of the end part of the U-shaped rod (5), and the thickness of the U-shaped bent part of the U-shaped rod (5) is smaller than that of the end part of the U-shaped rod (5).

5. The fistula aspiration closure system of claim 1, wherein: the channel blocking structure comprises a blocking disc (36) and four arc-shaped supporting bars (37) arranged at the circumferential edge of the blocking disc (36); a circle of limiting retainer ring (24) is arranged on the inner wall of the inner insertion pipe (2); the plugging disc (36) is arranged in the inner inserting tube (2) through four arc-shaped supporting bars (37), and the plugging disc (36) is positioned on the left side of the limiting retainer ring (24); the four arc-shaped supporting bars (37) elastically press the plugging disc (36) to cling to the left side edge of the limiting retainer ring (24) to realize plugging.

6. The fistula aspiration closure system of claim 5, wherein: the conveyor comprises an insertion tube (18), a pushing tube (19) and an inner push rod (20); the pushing pipe (19) is inserted in the inserting pipe (18) in a penetrating way, and the inner push rod (20) is inserted in the pushing pipe (19) in a penetrating way; a first limiting lug (21) is arranged on the outer pipe wall at the left end of the insertion pipe (18); a second limiting lug (22) is arranged on the outer pipe wall at the left end of the pushing pipe (19); a circle of second limiting ring groove (11) is arranged on the inner wall of the right-end pipe orifice of the inner insertion pipe (2); a second gap (15) communicated with the second limiting ring groove (11) is arranged on the end surface of the right pipe orifice of the inner insertion pipe (2); an inner pipe limiting convex ring (12) is arranged at the right end pipe orifice of the outer sleeve (1), and a circle of first limiting ring groove (13) is arranged on the inner ring surface of the inner pipe limiting convex ring (12); a first gap (14) communicated with the first limit ring groove (13) is arranged on the end surface of the right pipe orifice of the outer sleeve (1); the second limiting lug (22) enters the second limiting ring groove (11) from the second notch (15); the first limiting lug (21) enters the first limiting ring groove (13) from the first notch (14); one end of the inner push rod (20) penetrates through the push pipe (19) and extends into the inner insert pipe (2) to push the plugging disc (36) to be far away from the limiting retainer ring (24).

7. The fistula aspiration closure system of claim 6, wherein: a rotation limiting sliding groove (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 limiting slide block (27) which is embedded into the rotation limiting slide groove (25) in a sliding way is arranged on the supporting convex ring (26).

8. The fistula aspiration closure 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 pipe (19); one end of a tension spring (28) is fixed on the supporting convex ring (26), and the other end is fixed on a tension spring fixing convex ring (29).

9. The fistula aspiration closure system of claim 6, wherein: a side lug (30) is arranged on the outer tube wall at the right end of the insertion tube (18), and a hand-buckle hole (31) is arranged on the side lug (30); a handle frame (32) is arranged at the right end of the pushing pipe (19); a limiting disc (33) is arranged at the right end of the inner push rod (20); a supporting compression spring (34) is sleeved on the inner push rod (20), and two ends of the supporting compression spring (34) are respectively and elastically supported on the handle frame (32) and the limiting disc (33).

10. The fistula aspiration closure system of claim 9, wherein: a rotary seal (43) is arranged at the right-end pipe orifice of the pushing pipe (19) and used for forming 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 pumping butt joint pipe (39) is communicated and arranged on the pipe wall at the right end of the pushing pipe (19); a bar-shaped support bar (23) is arranged on the outer wall of the right end of the inner push rod (20) along the axial direction; the bar-shaped support bar (23) is supported on the inner pipe wall at the left end of the pushing pipe (19); and a sealing ring (38) is arranged on the outer pipe wall at the left end of the push pipe (19) and used for forming sealing between the outer wall at the left end of the push pipe (19) and the inner wall of the inner inserting pipe (2).