CN210844889U

CN210844889U - Balloon catheter capable of injecting liquid under guidance of endoscope

Info

Publication number: CN210844889U
Application number: CN201921105349.6U
Authority: CN
Inventors: 陈成水; 董莉; 胡良冈
Original assignee: First Affiliated Hospital of Wenzhou Medical University
Current assignee: CANYON MEDICAL Inc.
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-06-26
Anticipated expiration: 2029-07-15

Abstract

The utility model relates to a balloon catheter capable of injecting liquid under the guidance of an endoscope, which comprises a catheter main body and a connector, wherein a balloon is arranged on the catheter main body at a position close to the far end, an inflation channel and a liquid injection channel are axially arranged in the catheter main body, and a sealing valve is arranged in the inflation channel between the near end of the catheter main body and the balloon; the pipe main part constitutes to dismantle and sealing connection with the pipe pipeline both ends of connector, the import of annotating the liquid passageway is in the pipe pipeline. This can dismantle sacculus pipe can satisfy when the major hemorrhage bronchoscope operation need not withdraw from the air flue alright carry out the sacculus shutoff, in addition, if need, can also annotate the liquid operation through annotating liquid coupling and annotating the liquid passageway and avoid in the past need repeatedly exchange the complicated operation of introducing the sacculus pipe, unite two into one original two steps of inserting seal wire and sacculus pipe, reach more high-efficient, more accurate hemostasis purpose.

Description

Balloon catheter capable of injecting liquid under guidance of endoscope

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to balloon catheter that can annotate liquid under endoscope guide.

Background

The existing bronchoscope guides the hemostasis operation of the lower three-cavity balloon catheter: the bronchoscope is placed into the nasal/oral/tracheal intubation channel, the position of active hemorrhage is determined, a guide wire is placed into a segment/lobar bronchial lumen of the active hemorrhage through a bronchoscope biopsy channel, the bronchoscope is slowly withdrawn, a balloon catheter is placed along the guide wire, the bronchoscope is placed into the nasal/oral/tracheal intubation channel again, the process that the balloon catheter is placed into the segment/lobar bronchial lumen of the hemorrhage is observed under direct vision, after the balloon position is confirmed, the balloon is inflated through a near-end luer connector and is inflated and fixed to be stopped from bleeding, blood is prevented from flowing from a gushing side to other normal healthy side segment bronchi, thrombin is injected into the bleeding lumen through a near-end drug injection port of the balloon catheter, and the bronchoscope is withdrawn again after no hemorrhage is. From the above description, the current three-lumen balloon catheter has complicated hemostasis operation, requires repeated exchange of bronchoscope placement, and urgently needs a balloon catheter which can simplify the above operation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses lie in order to overcome current three chamber sacculus pipe hemostasis operation complicacy, need exchange the not enough that the bronchoscope put into repeatedly, and provide the sacculus pipe that can annotate liquid under the endoscope guide, use this sacculus pipe, the bronchoscope operation need not withdraw from the air flue alright carry out the sacculus shutoff and annotate the liquid operation, avoided in the past need exchange the complicated operation of introducing the sacculus pipe repeatedly.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a sacculus pipe of liquid can be annotated under endoscope guide, includes pipe main part and sets up the sacculus on being close to pipe main part distal end, its characterized in that: the balloon catheter is also provided with a connector, an inflation channel and a liquid injection channel are axially arranged in the catheter main body, an inlet of the inflation channel is arranged on the near end of the catheter main body, and the far end of the inflation channel is communicated with the balloon; the outlet of the liquid injection channel is arranged at the far end of the catheter main body, the inlet of the liquid injection channel is arranged on the side wall of the catheter main body close to the near end, a sealing valve for preventing the air leakage of the inflation channel is arranged in the inflation channel between the near end of the catheter main body and the balloon, and the far end part of the catheter main body relative to the balloon forms a guide head; the connector is tee bend tubulose component, and inside is equipped with a pipe pipeline that link up both ends, and the side is equipped with the notes liquid coupling of one end and pipe pipeline UNICOM, the pipe pipeline is passed to the near-end of pipe main part, pipe pipeline both ends are equipped with sealed clamping mechanism will pipe main part with the pipe pipeline both ends constitution of connector can be dismantled and sealing connection, the import of annotating the liquid passageway is in the pipe pipeline.

As a further setting of the utility model, the connector includes tee bend pipe fitting and two end caps of T shape or "bo" font, direct pore in the tee bend pipe fitting constitutes the pipe pipeline, the middle section diameter of pipe pipeline is less than both ends diameter, be the toper between the both ends of pipe pipeline and the middle section and be connected, the toper junction is equipped with elasticity ring packing, the end cap center is equipped with the axial tubulose ejector pin of perforating hole, the diameter and the pipe main part diameter clearance fit of perforating hole, two end caps respectively with the both ends of direct pore in the tee bend pipe fitting constitute threaded connection, the end cap perforating hole and the ring packing at pipe pipeline and both ends are passed to pipe main part near-end, the axial tubulose ejector pin tip at end cap center supports to press elasticity ring packing constitutes sealed clamping mechanism.

As a further setup of the utility model, be the single channel structure between the near-end of pipe main part and the import of annotating the liquid passageway, the single channel front end with aerify passageway UNICOM, the seal valve sets up in this single channel structure.

As a further setting of the utility model, the seal valve sets up the near-end at inflation channel, the fixed retaining ring that is provided with in inflation channel's the near-end mouth prevents the seal valve is deviate from.

As a further arrangement of the utility model, still be equipped with sealed cap on the near-end of pipe main part, be between the near-end of sealed cap and pipe main part and dismantle sealing connection.

As a further setting of the utility model, sealed cap includes front end open-ended tubulose main part, front end cap and elastic sealing ring, front end cap terminal surface be equipped with the near-end clearance fit's of pipe main part pipe perforation, elastic sealing ring sets up the inner chamber bottom at the front end cap, elastic sealing ring's centre bore and the near-end clearance fit of pipe main part, the pipe main part near-end is passed pipe perforation and pipe perforation are to the inner chamber of front end cap, the open end of sealed cap inserts in the front end cap and constitute threaded connection, the tip of sealed cap supports to press constitute on the elastic sealing ring can dismantle sealing connection between the near-end with the pipe main part.

As a further setting of the utility model, the seal valve is including wholly being cylindric valve body, the valve body diameter with inflation channel aperture interference fit is made by elastic material, the valve body is equipped with the passageway that link up to the other end.

As a further setting of the utility model, the terminal surface that the valve body admits air is equipped with the direction recess.

As a further setting of the utility model, the passageway is for being equipped with the seam that link up to the other end, the seam entry end is equipped with the triangle recess and constitutes the direction recess.

As the utility model discloses a further setting, the guide head anterior segment is softer, and the back end is hard slightly, forms the hard soft or hard combined structure in soft back before.

Compared with the prior art, when the endoscope guides the balloon catheter capable of injecting liquid to perform hemostasis operation, the bronchoscope is placed through the nasal/oral/tracheal intubation channel, the bronchoscope biopsy channel is placed, under the observation of the bronchoscope, the balloon catheter is guided to reach the bleeding position, at the moment, the balloon is inflated through the inflation channel through which an inflating device such as a syringe without a needle (or with a needle) passes on the inlet of the inflation channel, so that the balloon is inflated to be closely attached to the airway, anchored in the bronchial tube, and then the inflating device is removed; when the bronchoscope needs to be withdrawn, the bronchoscope can be withdrawn smoothly only by detaching the connector. Therefore, the balloon plugging can be carried out without withdrawing the air passage during the operation of the bronchoscope during heavy bleeding, the complex operation of introducing the balloon catheter by repeated exchange in the prior art is avoided, the bleeding part can be reached simply, conveniently and quickly in operation, the original two steps of inserting the guide wire and the balloon catheter are combined into one, and the aim of stopping bleeding with higher efficiency and accuracy is fulfilled.

The invention will be further described with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the structure of FIG. 1A-A;

FIG. 3 is an enlarged view of a portion of FIG. 2I;

FIG. 4 is a front view of an embodiment of the sealing cap of the present invention;

FIG. 5 is a cross-sectional view of the structure of FIGS. 4B-B;

FIG. 6 is an exploded view of the sealing cap according to the embodiment of the present invention;

FIG. 7 is a schematic view of the appearance of the embodiment of the present invention with a sealing cap (inflated state);

FIG. 8 is a front view of the embodiment of the present invention with a sealing cap;

FIG. 9 is a cross-sectional view of the structure of FIGS. 8C-C;

FIG. 10 is an enlarged view of a portion of FIG. 9 II;

FIG. 11 is a schematic view of an embodiment of the sealing cap of the present invention;

FIG. 12 is a front view of an embodiment of the sealing cap of the present invention;

FIG. 13 is a cross-sectional view of the structure of FIG. 12D-D;

fig. 14 is a schematic view of an embodiment of a sealing valve according to the present invention;

fig. 15 is a front view of a sealing valve according to an embodiment of the present invention;

fig. 16 is a cross-sectional view of the structure of fig. 15E-E.

Detailed Description

As shown in fig. 1-3, the balloon catheter for injecting liquid under the guidance of the endoscope of the present invention comprises a catheter main body 1, a balloon 2 disposed at the distal end of the catheter main body 1, and a connector. The tubular component of the catheter main body 1 is axially provided with an inflation channel 5 and an injection channel 8, an inlet of the inflation channel 5 is arranged at the near end of the catheter main body 1, the far end of the inflation channel 5 is communicated with the balloon 2, an outlet of the injection channel 8 is arranged at the far end of the catheter main body 1, an inlet of the injection channel 8 is arranged at the near end or on the side wall close to the near end, a sealing valve 4 for preventing the inflation channel 5 from leaking air is arranged in the inflation channel 5 between the near end of the catheter main body 1 and the balloon 2, and a distal end part of the catheter main body 1 relative to the balloon 2 forms a guide head 3. The connector is tee bend tubulose component, and inside is equipped with a pipe pipeline that link up both ends, and the side is equipped with the notes liquid coupling of one end and pipe pipeline UNICOM, the pipe pipeline is passed to the near-end of pipe main part 1, pipe pipeline both ends are equipped with sealed clamping mechanism will pipe main part 1 with the pipe pipeline both ends constitution of connector can be dismantled and sealing connection, the import of notes liquid passageway 8 is in the pipe pipeline. The catheter main body 1 is made of materials and has the same diameter as that of the existing catheter, the diameter can be different in specification, the diameter is preferably 1.5-3.0mm, the length of the distal guide head 3 of the catheter main body 1 is preferably 5-20cm, the catheter main body is made of slightly elastic and flexible materials, such as silica gel, TPU polyurethane, PEBAX block polyether amide resin and the like, and the hardness is about 50A-50D Shore hardness, so that a trachea can be prevented from being punctured.

The balloon 2 can be the same as that of the existing balloon 2 catheter, the balloon 2 is preferably cylindrical after being expanded, the pressure on the tracheal wall can be reduced and uniform, the blocking effect is improved, the axial length of the balloon 2 is preferably 8-15mm, and the diameter of the balloon 2 after being inflated is preferably 10-30mm, preferably 15-25 mm.

In this embodiment, as shown in fig. 14 to 16, the sealing valve 4 includes a valve body 401 having a cylindrical shape, the diameter of the valve body 401 is in interference fit with the aperture of the inflation channel 5, the valve body is made of an elastic material, a groove 402 is formed on the air inlet end surface of the valve body 401, a slot 403 penetrating to the other end (i.e., the air outlet end) is formed at the bottom of the groove 402, and the groove 402 is preferably a triangular groove. The grooves 402 are provided to converge the air flow at the entrance of the slot 403 to expand the slot 403 when inflating the balloon 2, facilitating the air flow through the slot 403, and also allowing the balloon 2 to be inflated by inserting a needle through the slot 403.

The sealing valve 4 is preferably arranged at the proximal end of the inflation channel 5, and an annular retainer ring 6 is fixedly arranged in the proximal port of the inflation channel 5 to prevent the sealing valve 4 from being removed. Specifically, a section of cavity with a diameter and a length matched with those of the valve body 401 and the annular retainer ring 6 of the sealing valve 4 is arranged at the proximal end of the inflation channel 5, the diameter of the cavity is slightly larger than that of the rest part of the inflation channel 5, so that a limiting shoulder step is formed at the inner end, and the valve body 401 and the annular retainer ring 6 are sequentially placed and fixed.

Since the catheter diameter of the balloon 2 cannot be too large, usually below 2.8mm, the space for installing the sealing valve 4 is very limited, and the difficulty is even greater if the double-cavity arrangement of the inflation channel 5 and the injection channel 8 (i.e. the inlets of the inflation channel 5 and the injection channel 8 are arranged simultaneously) is adopted at the position where the sealing valve 4 is installed. As a preferred embodiment, the inlet of the liquid injection channel 8 is disposed on the sidewall near the proximal end of the catheter main body 1, a length matching the sealing valve 4 and the annular retainer ring 6 is left between the inlet of the liquid injection channel 8 and the proximal end portion, a single-channel structure is disposed between the proximal end of the catheter main body 1 and the inlet of the liquid injection channel 8, the dual-cavity arrangement of the inflation channel 5 and the liquid injection channel 8 is adopted for the part below the inlet of the liquid injection channel 8, the front end of the single channel is communicated with the inflation channel 5, and the sealing valve 4 and the annular retainer ring 6 are disposed in the single-channel structure.

In this embodiment, as shown in fig. 4-6, the connector 2 includes a T-shaped or "halberd" shaped tee pipe 203 and two end caps 204, a straight through hole in the tee pipe 203 forms the conduit pipe 201, the diameter of the middle section of the conduit pipe 201 is smaller than the diameter of the two ends, the two ends of the conduit pipe 201 are connected with the middle section in a tapered shape, an elastic annular sealing ring 5 is arranged at the tapered connection position, an axial tubular push rod 205 of the through hole is arranged in the center of the end cap 204, the diameter of the through hole is in clearance fit with the diameter of the conduit main body 1, the two end caps 204 are respectively in threaded connection with the two ends of the straight through hole in the tee pipe 203, the proximal end of the conduit main body 1 passes through the conduit pipe 201 and the through holes 204 of the end caps 204 at the two ends and the annular sealing rings 5, the end of the axial tubular, the two ends of the conduit pipe 201 are sealed by utilizing the jacking pressure of the end part of the axial tubular ejector rod 205 at the center of the end cap 204, the inclined surface action of the conical connection part and the elasticity of the annular sealing ring 5, and the conduit main body 1 is clamped and fixed to form the sealing and clamping mechanism.

In order to further improve the sealing performance and the hemostasis effect, the proximal end of the catheter main body 1 is preferably further provided with a sealing cap 7 for closing the inlet of the inflation channel 5, and the sealing cap 7 is detachably connected with the proximal end of the catheter main body 1 in a sealing manner, as shown in fig. 7-10.

As shown in fig. 11-13, the sealing cap 7 includes a tubular main body 701 with an open front end, a front end cap 702 and an elastic sealing ring 703, the front end cap 702 has a conduit through hole 704 that is in clearance fit with the proximal end of the conduit main body 1 on the end surface, the elastic sealing ring 703 is disposed at the bottom of the inner cavity of the front end cap 702, the central hole of the elastic sealing ring 703 is in clearance fit with the proximal end of the conduit main body 1, the proximal end of the conduit main body 1 passes through the conduit through hole 704 and the central hole of the elastic sealing ring 703 to the inner cavity of the front end cap 702, the open end of the sealing cap 7 is inserted into the front end cap 702 and forms a threaded connection, and the end of the sealing cap 7 is pressed against the elastic sealing ring 703, so that the elastic sealing ring 703 is elastically deformed to clamp the conduit main body 1.

Preferably, the front section 301 of the guide head is made of a softer material, the rear section 302 (the length is about 10-15 cm) close to the balloon 2 is made of a slightly hard material with a certain rigid catheter, so that the structure of the guide head 3 of the front section (the far section) of the balloon 2 is in soft and hard combination to play a role in guiding, so that better insertion performance is ensured, and guide wires are not needed when the balloon is placed. Specifically, the softer part of the front section can be made of silica gel, TPU polyurethane, PEBAX block polyether amide resin and the like, and the hardness is about between 50A and 50D in Shore hardness; the slightly hard part can be made of TPU (polyurethane), PEBAX (block polyether amide resin), PE, PA and the like with higher hardness, and the hardness is between 50D and 90D in Shore hardness. In order to prevent the distal guide tip 3 from accidentally exiting the predetermined position, the soft-hard bonding portion of the guide tip 3 (distal portion) in front of the balloon 2 is not too short, and generally should be more than 10cm in length.

Preferably, the catheter main body 1 at the rear section of the balloon 2 is formed by sequentially connecting a section of slightly rigid catheter and a section of soft catheter, and the length of the soft part of the catheter is about twice of the length of a forceps channel of the bronchoscope, so that a slightly rigid insertion effect is ensured, and the nasal foreign body sensation of a patient is reduced. The slightly rigid part of the catheter main body 1 can also be made of TPU (polyurethane), PEBAX (block polyether amide resin), PE, PA and the like with higher hardness, the hardness is about 50D-90D, and the soft part catheter is made of silica gel, TPU polyurethane, PEBAX block polyether amide resin and the like, the hardness is about 50A-50D.

The utility model discloses a prevent under bronchoscope guide displacement and dismantle 2 pipes of sacculus's application method as follows: taking the hemostasis operation as an example, when the detachable balloon 2 catheter of the utility model is used for hemostasis operation, a bronchoscope is placed through the nasal/oral/tracheal intubation channel, the detachable balloon 2 catheter with the guide wire is placed through the bronchoscope biopsy channel, and after the balloon 2 catheter is guided to reach the bleeding position under the observation of the bronchoscope, at the moment, the balloon 2 is inflated through the inflation channel 5 through which an inflation device such as a syringe without a needle (or with a needle) passes, so that the balloon 2 is inflated to be closely attached to the airway, and is anchored at the segment bronchus for hemostasis; if necessary, the inflation device can be passed and then removed, the balloon 2 cannot be deflated because the sealing valve 4 is provided at the proximal end of the inflation channel 5, and then the connector is removed and the bronchoscope is withdrawn. Therefore, the balloon 2 can be blocked without exiting the air passage during bronchoscope operation in heavy bleeding, the complex operation of introducing the balloon 2 catheter by repeated exchange in the past is avoided, the operation is simple, convenient and quick to reach the bleeding part, the original two steps of inserting the guide wire and the balloon 2 catheter are combined into one, and the aim of stopping bleeding with higher efficiency and accuracy is achieved.

The utility model discloses do not confine the above-mentioned embodiment to, the ordinary skilled person in this field can adopt other multiple embodiments to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope.

Claims

1. The utility model provides a sacculus pipe of liquid can be annotated under endoscope guide, includes pipe main part and sets up the sacculus on being close to pipe main part distal end, its characterized in that: the balloon catheter is also provided with a connector, an inflation channel and a liquid injection channel are axially arranged in the catheter main body, an inlet of the inflation channel is arranged on the near end of the catheter main body, and the far end of the inflation channel is communicated with the balloon; the outlet of the liquid injection channel is arranged at the far end of the catheter main body, the inlet of the liquid injection channel is arranged on the side wall of the catheter main body close to the near end, a sealing valve for preventing the air leakage of the inflation channel is arranged in the inflation channel between the near end of the catheter main body and the balloon, and the far end part of the catheter main body relative to the balloon forms a guide head; the connector is tee bend tubulose component, and inside is equipped with a pipe pipeline that link up both ends, and the side is equipped with the notes liquid coupling of one end and pipe pipeline UNICOM, the pipe pipeline is passed to the near-end of pipe main part, pipe pipeline both ends are equipped with sealed clamping mechanism will pipe main part with the pipe pipeline both ends constitution of connector can be dismantled and sealing connection, the import of annotating the liquid passageway is in the pipe pipeline.

2. The endoscope guided infusible balloon catheter of claim 1, wherein: the connector comprises a T-shaped or 'halberd' -shaped tee pipe fitting and two end caps, a straight-through hole in the tee pipe fitting forms the conduit pipe, the diameter of the middle section of the conduit pipe is smaller than that of the two ends, the two ends of the conduit pipe are in conical connection with the middle section, an elastic annular sealing ring is arranged at the conical connection position, an axial tubular ejector rod of a through hole is arranged at the center of each end cap, the diameter of the through hole is in clearance fit with the diameter of a conduit main body, the two end caps are in threaded connection with the two ends of the straight-through hole in the tee pipe fitting respectively, the near end of the conduit main body penetrates through the conduit pipe and the end cap through holes and the annular sealing rings at the two ends, and the end part of the axial tubular ejector rod.

3. The endoscope guided infusible balloon catheter of claim 1, wherein: a single-channel structure is arranged between the near end of the catheter main body and an inlet of the liquid injection channel, the front end of the single channel is communicated with the inflation channel, and the sealing valve is arranged in the single-channel structure.

4. The endoscope guided infusible balloon catheter of claim 1, wherein: the sealing valve is arranged at the near end of the inflation channel, and a check ring is fixedly arranged in a near end opening of the inflation channel to prevent the sealing valve from falling off.

5. The endoscope guided infusible balloon catheter of claim 1, wherein: the catheter is characterized in that a sealing cap is further arranged on the near end of the catheter main body, and the sealing cap is detachably connected with the near end of the catheter main body in a sealing mode.

6. The endoscope guided infusible balloon catheter of claim 5, wherein: the sealing cap comprises a tubular main body with an opening at the front end, a front end cap and an elastic sealing ring, wherein the end face of the front end cap is provided with a catheter perforation matched with the near end clearance of the catheter main body, the elastic sealing ring is arranged at the bottom of the inner cavity of the front end cap, the center hole of the elastic sealing ring is matched with the near end clearance of the catheter main body, the near end of the catheter main body penetrates through the catheter perforation and the inner cavity of the catheter perforation to the front end cap, the opening end of the sealing cap is inserted into the front end cap and forms threaded connection, and the end part of the sealing cap is pressed against the elastic sealing ring to form the sealing cap which can be.

7. The endoscope guided infusible balloon catheter of any of claims 1-6, wherein: the sealing valve comprises an integrally cylindrical valve body, the diameter of the valve body is in interference fit with the aperture of the inflation channel and is made of elastic materials, and the valve body is provided with a channel penetrating to the other end.

8. The endoscope guided infusible balloon catheter of claim 7, wherein: the end face of the valve body for air intake is provided with a guide groove.

9. The endoscope guided infusible balloon catheter of claim 8, wherein: the channel is provided with a slot which penetrates to the other end, and the inlet end of the slot is provided with a triangular groove to form the guide groove.

10. The endoscope guided infusible balloon catheter of claim 1, wherein: the front section of the guide head is softer, and the rear section of the guide head is slightly harder, so that a soft-hard combined structure with a soft front part and a hard rear part is formed.