CN211383379U

CN211383379U - Endoscope guided lower balloon catheter

Info

Publication number: CN211383379U
Application number: CN201921105375.9U
Authority: CN
Inventors: 陈成水; 李玉苹; 董莉; 胡良冈; 叶民; 陈俊杰
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: 2020-09-01
Anticipated expiration: 2029-07-15

Abstract

The utility model relates to a balloon catheter under endoscope guidance, including the pipe main part and setting up the sacculus on being close to the pipe main part distal end, the distal end of pipe main part is equipped with guide head and the sealing cap that is used for sealing the import of inflation channel, the axial is equipped with an inflation channel in the pipe main part, the import of inflation channel sets up on the pipe main part proximal end, the distal end of inflation channel with the sacculus UNICOM, be equipped with the seal valve that prevents inflation channel gas leakage in the inflation channel between the near end of pipe main part and the sacculus; the sealing cap is 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. The balloon catheter under the guide of the endoscope can meet the requirement that balloon plugging can be carried out without withdrawing an air passage in the operation of a bronchoscope during heavy bleeding, the complex operation that the balloon catheter needs to be introduced by repeated exchange in the prior art is avoided, 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 achieved.

Description

Endoscope guided lower balloon catheter

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to sacculus pipe 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bronchial lumen of the active hemorrhage through a bronchoscope biopsy channel, the bronchoscope is slowly withdrawn, a balloon catheter is placed along the guide wire, the bronchoscope is placed into the nasal/oral/tracheal intubation channel again, the process that the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 a sacculus pipe under the endoscope guide, use this sacculus pipe, the bronchoscope operation need not withdraw from the air flue alright carry out the sacculus shutoff, 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 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 far end of the catheter main body is provided with a guide head, an inflation channel is axially arranged in the catheter main body, an inlet of the inflation channel is arranged at the near end of the catheter main body, the far end of the inflation channel is communicated with the balloon, and a sealing valve for preventing the inflation channel from leaking air is arranged in the inflation channel between the near end of the catheter main body and the balloon; the sealing cap is 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.

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 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 the utility model discloses a further setting, the pipe main part of sacculus back end is connected by a section pipe that has the rigidity a little and a section mild pipe in proper order and is constituteed, makes the pipe main part behind the sacculus be soft or hard combined structure.

Compared with the prior art, use the utility model discloses a when sacculus pipe carries out hemostatic operation under the endoscope guide, bronchoscope is put into to intranasal/mouth/trachea cannula passageway, puts into through bronchoscope biopsy channel, under the observation of bronchoscope, guide sacculus pipe arrival hemorrhage position back, this moment on inflation channel's the import, aerify for the sacculus with aerating device if the inflation channel that the syringe that does not take the needle (or take the needle) passes through, make the sacculus sufficient hug closely the air flue, the anchor is in section bronchus, then remove aerating device, owing to be equipped with the seal valve at inflation channel's near-end, consequently the sacculus can not lose heart, then withdraw from the bronchoscope, because the whole front and back diameter of the pipe main part of sacculus pipe is unanimous under this endoscope guide, so can withdraw from the bronchoscope smoothly. Therefore, the balloon plugging can be carried out without withdrawing the air passage in the bronchoscope operation during heavy bleeding, the complex operation of introducing a balloon catheter by repeated exchange is avoided, the bleeding part is conveniently and quickly reached in the operation, the original two steps of inserting the guide wire and the balloon catheter are combined into one, the more efficient and more accurate hemostasis purpose is achieved, and the sealing cap is further arranged on the near end of the catheter main body, so that the sealing effect is better and longer in duration.

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 an appearance schematic diagram of an inflated state according to an embodiment of the present invention;

FIG. 3 is a front view of an embodiment of the present invention;

FIG. 4 is a cross-sectional view of the structure of FIG. 3A-A;

FIG. 5 is an enlarged view of a portion of FIG. 4I;

FIG. 6 is an enlarged view of a portion of FIG. 4 II;

FIG. 7 is a schematic view of an embodiment of the sealing cap of the present invention;

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

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

fig. 10 is a schematic view of a sealing valve according to an embodiment of the present invention;

fig. 11 is a front view of a sealing valve according to an embodiment of the present invention;

FIG. 12 is a cross-sectional view of the structure of FIGS. 11C-C.

Detailed Description

As shown in fig. 1-6, the endoscope guided balloon catheter of the present invention comprises a catheter main body 1, a balloon 2 disposed at a distal end of the catheter main body 1, and a sealing cap 7 for sealing an inlet of an inflation channel 5, wherein a guide head 3 is disposed at the distal end of the catheter main body 1. The catheter main body 1 is a tubular component with an inflation channel 5 arranged in the central axial direction, the adopted materials and the diameter can be the same as those of the existing catheter, the catheter can have different specifications, the diameter is preferably not more than 2.8mm, and a balloon 2 is arranged on the position, close to the far end, of the catheter main body 1. The inflation channel inlet 501 is arranged at the proximal end of the catheter main body 1, the distal end of the inflation channel 5 (i.e. the inflation channel outlet 502) is communicated with the balloon 2, and a sealing valve 4 is arranged in the inflation channel 5 between the proximal end of the catheter main body 1 and the balloon 2 to prevent the inflation channel 5 from leaking air. The balloon 2 can be the same as that of the existing balloon catheter, the balloon 2 is preferably cylindrical after being expanded, the pressure on the tracheal wall can be reduced and uniform, the blocking effect can be 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, and is preferably 15-25 mm. The length of the guide head 3 is preferably 5-25cm, the guide head 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 of Shore hardness, so that the trachea is prevented from being punctured.

In this embodiment, as shown in fig. 10 to 12, 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, and is made of an elastic material, the air inlet end surface of the valve body 401 is provided with a groove 402, the bottom of the groove 402 is provided with a slit 403 penetrating to the other end (i.e., the air outlet end), the groove 402 is preferably a triangular groove 402, so that when the balloon 2 is inflated, the air flow is converged at the inlet of the slit 403 to expand the slit 403, which is beneficial for the air flow to pass through the slit 403, and the balloon 3 can also be inflated by inserting a needle through the slit 402. The sealing valve 4 is suitable for being applied to a small space such as a catheter, and is simple in structure and convenient to manufacture.

The sealing valve 4 is arranged at the proximal end of the inflation channel 5, and an annular retainer ring 6 is fixedly arranged in a proximal end opening (inflation channel inlet 501) of the inflation channel 5 to prevent the sealing valve 4 from being removed. Specifically, a section of cavity with the diameter and the length matched with those of the valve body 401 of the sealing valve 4 and the annular retainer ring 6 is arranged at the near 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 the inner side end forms a limiting shoulder step, and the valve body 401 and the annular retainer ring 6 are sequentially placed and fixed.

In order to further improve the sealing performance and enhance the hemostatic 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 and hermetically connected with the proximal end of the catheter main body 1, as shown in fig. 3-6.

As shown in fig. 7-9, 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 to form 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 catheter main body 1 at the rear section of the balloon 2 is formed by sequentially connecting a section of catheter with slight rigidity and a section of flexible catheter, so that the slightly rigid insertion effect is ensured, the nasal foreign body sensation caused to a patient is reduced, and the length of the flexible catheter is slightly longer than twice of the length of the clamp channel of the bronchoscope, so that the bronchoscope can be conveniently withdrawn. 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 method for using a balloon catheter under guidance of an endoscope, which comprises the following steps: taking the operation of hemostasis as an example, when the detachable balloon catheter of the utility model is used for hemostasis, a bronchoscope is arranged in the nasal/oral/tracheal intubation channel, the balloon catheter is arranged in the nasal/oral/tracheal intubation channel through a bronchoscope biopsy channel, after the balloon catheter is guided to the bleeding position under the observation of a bronchoscope, at the moment, on the inflation channel inlet 501, the balloon 2 is inflated by an inflation device such as an inflation channel 5 through which a syringe without a needle (or with a needle) passes, so that the balloon 2 is inflated to be tightly attached to the airway and anchored in the segment of bronchus, then the inflation device is removed, because the sealing valve 4 is arranged at the near end of the inflation channel 5, the balloon 2 cannot be deflated, and because the sealing cap 7 is further arranged at the near end of the catheter main body 1, the sealing effect is better, the duration is longer, and when the bronchoscope needs to be withdrawn, the bronchoscope can be withdrawn only by detaching the sealing cap 7. Therefore, the balloon 2 can be blocked without exiting the air passage during bronchoscope operation in heavy bleeding, the complex operation of introducing a balloon catheter by repeated exchange in the past 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 more efficiently and accurately is fulfilled.

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 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 far end of the catheter main body is provided with a guide head and a sealing cap for sealing an inlet of an inflation channel, the catheter main body is axially provided with the inflation channel, the inlet of the inflation channel is arranged at the near end of the catheter main body, the far end of the inflation channel is communicated with the balloon, and a sealing valve for preventing the inflation channel from leaking air is arranged in the inflation channel between the near end of the catheter main body and the balloon; the sealing cap is 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.

2. The endoscope guided balloon catheter of claim 1, 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.

3. The endoscope guided balloon catheter of claim 2, wherein: the end face of the valve body for air intake is provided with a guide groove.

4. The endoscope guided balloon catheter of claim 3, 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.

5. The endoscope guided balloon catheter of claim 1, 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.

6. The endoscope guided balloon catheter of claim 1, wherein: the catheter main body at the rear section of the balloon is formed by connecting a section of catheter with slight rigidity and a section of flexible catheter in sequence, so that the catheter main body behind the balloon is of a soft-hard combined structure.