CN211357363U

CN211357363U - Self-guiding balloon catheter under endoscope

Info

Publication number: CN211357363U
Application number: CN201921105370.6U
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: 2020-08-28
Anticipated expiration: 2029-07-15

Abstract

The utility model relates to a self-guiding sacculus pipe under endoscope, including pipe main part and setting being close to the sacculus on the pipe main part distal end, the axial is equipped with an inflation channel in the pipe main part, inflation channel's distal end with 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 distal part for the sacculus of pipe main part constitutes the guide head, the guide head is soft or hard integrated configuration. The balloon catheter can meet the requirement that balloon plugging can be carried out without withdrawing an air passage during bronchoscope operation in heavy bleeding, the complex operation that the balloon catheter needs to be introduced by repeated exchange in the past 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 fulfilled. Simultaneously, the guide head structure of sacculus anterior segment combines for soft or hard, can ensure that the insertability is better to can avoid stabbing the trachea, improve the security.

Description

Self-guiding balloon catheter under endoscope

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to self-guiding sacculus pipe under endoscope.

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bronchial lumen of the active hemorrhage through a bronchoscope biopsy channel, the bronchoscope is slowly withdrawn, a balloon catheter is placed along the guide wire, the bronchoscope is placed into the nasal/oral/tracheal intubation channel again, the process that the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 bronchoscope put into repeatedly, and provide a self-guide sacculus pipe under the endoscope, use this sacculus pipe, bronchoscope operation need not withdraw from the air flue alright carry out the sacculus shutoff, and need not the seal wire guide when putting into, 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: including catheter body and the sacculus of setting on being close to catheter body distal end, its characterized in that: the catheter comprises a catheter main body and is characterized in that an inflation channel is axially arranged in the catheter main body, an inlet of the inflation channel is formed in the near end of the catheter main body, the far end of the inflation channel is communicated with a balloon, 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, a far end part of the catheter main body relative to the balloon forms a guide head, the front section of the guide head is softer, the rear section of the guide head is slightly harder, and a soft-hard combined structure with a soft front part.

As the utility model discloses further set up, the seal valve is including wholly being cylindric valve body, the valve body diameter with aerify passageway aperture interference fit, make by elastic material, the valve body is equipped with the passageway that link up to the other end.

As the utility model discloses further set up, the terminal surface that the valve body admits air is equipped with the direction recess.

As the utility model discloses further set up, 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 further set up, still be equipped with the sealed cap that is used for sealing the import of inflation channel 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 the utility model discloses further set up, sealed cap 7 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 presses constitute on the elastic sealing ring can dismantle sealing connection between the near-end with the pipe main part.

Compared with the prior art, use the utility model discloses a during self-guide sacculus pipe carries out hemostatic operation under the endoscope, the bronchoscope is put into to intranasal/mouth/trachea cannula passageway, puts into this endoscope through bronchoscope biopsy channel under self-guide sacculus pipe, under the observation of bronchoscope, through the guide effect of guide head, makes sacculus pipe reach hemorrhagic position, need not the seal wire guide when consequently putting into. Then, on the inlet of the inflation channel, the balloon is inflated by an inflation device such as an inflation channel through which a syringe without a needle (or with a needle) passes, so that the balloon is inflated to be tightly attached to the airway, anchored in the segmental bronchus, and then the inflation device is removed. 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. Simultaneously, the guide head structure of sacculus anterior segment combines for soft or hard, can ensure that the insertability is better to can avoid stabbing the trachea, improve the security.

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 sectional view of the internal structure of the embodiment of the present invention;

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

FIG. 4 is a schematic view of the embodiment of the present invention with a sealing cap (in an uninflated state);

FIG. 5 is a schematic view of the embodiment of the present invention with a sealing cap (in an inflated state);

FIG. 6 is a front view of the embodiment of the present invention with a sealing cap;

FIG. 7 is a cross-sectional view of the structure of FIG. 6A-A;

FIG. 8 is an enlarged view of a portion of FIG. 7 II;

FIG. 9 is an enlarged view of a portion of FIG. 7 III;

FIG. 10 is a schematic view of an embodiment of the sealing cap of the present invention;

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

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

fig. 13 is a schematic view of a sealing valve according to an embodiment of the present invention;

figure 14 is a front view of a sealing valve according to an embodiment of the present invention;

FIG. 15 is a cross-sectional view of the structure of FIGS. 14C-C.

Detailed Description

As shown in fig. 1-3, the endoscope guided balloon catheter of the present invention includes a catheter main body 1, and a guide head 3 is disposed at a distal end of the catheter main body 1. The catheter main body 1 is a tubular component provided with an inflation channel 5 in the 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 catheter main body 1 and close to the far end. In order to prevent the distal guide head 3 from accidentally withdrawing from the preset position, the soft-hard combination part of the guide head 3 (distal section) in front of the balloon 2 is not too short, the length is usually more than 10cm, preferably 10-30cm, the front section 301 of the guide head is softer (the length is about 5-20 cm), the rear section 302 of the guide head is slightly harder (the length is about 10-20 cm), a soft-hard combination structure with soft front and hard rear is formed, the softer part can be 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 between 50A and 50D Shore hardness, so as to prevent the puncture of the trachea; the slightly hard part can also 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 of Shore hardness. The inflation channel inlet 501 is arranged at the proximal end of the catheter main body 1, the distal end of the inflation channel (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 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 favorably 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.

In this embodiment, as shown in fig. 13 to 15, 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 401 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 disposed at the proximal end of the inflation channel 5, and an annular retainer ring 6 is fixedly disposed in a proximal port (i.e., the inflation channel inlet 501) 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 of the sealing valve 4 and the annular retainer ring 6 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 arranged and fixed.

In order to further improve the sealing performance and enhance the hemostatic effect, as shown in fig. 4-9, the proximal end of the catheter main body 1 is preferably further provided with a sealing cap 7 for closing the inlet 501 of the inflation channel, and the sealing cap 7 is detachably and hermetically connected with the proximal end of the catheter main body 1.

As shown in fig. 10 to 12, 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 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 catheter main body 1 behind the balloon 2 is of a soft-hard combined structure, thereby ensuring slight rigidity insertion effect and reducing nasal cavity foreign body sensation caused to a patient, and the length of the flexible part of the catheter is slightly longer than twice of the length of a clamp channel of a bronchoscope, so as to facilitate the exit of the bronchoscope. 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 use method of 2 pipes of sacculus under the guide of endoscope as follows: take hemostatic operation as an example, use the utility model discloses a can dismantle 2 pipes of sacculus when carrying out hemostatic operation, put into the bronchoscope through nasal/mouth/trachea cannula passageway, put into this sacculus 2 pipe through bronchoscope biopsy channel, under the observation of bronchoscope, guide 2 pipes of sacculus reachs the position of bleeding, be in this moment on the inflation channel import 501, aerify for sacculus 2 with aerating device if the inflation channel 5 that the syringe that does not take the needle (or take the needle) passes through, make sacculus 2 be full of and hug closely the air flue, the anchor is in the section bronchus, then remove aerating device, owing to be equipped with seal valve 4 at inflation channel 5's near-end, consequently sacculus 2 can not lose heart, then withdraw from the bronchoscope. 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 self-guiding sacculus pipe under endoscope, includes pipe main part and sets up the sacculus on being close to pipe main part distal end, its characterized in that: the catheter comprises a catheter main body and is characterized in that an inflation channel is axially arranged in the catheter main body, an inlet of the inflation channel is formed in the near end of the catheter main body, the far end of the inflation channel is communicated with a balloon, 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, a far end part of the catheter main body relative to the balloon forms a guide head, the front section of the guide head is softer, the rear section of the guide head is slightly harder, and a soft-hard combined structure with a soft front part.

2. The endoscopically self-guiding balloon catheter as claimed in 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 endoscopically self-guiding balloon catheter as claimed in claim 2, wherein: the end face of the valve body for air intake is provided with a guide groove.

4. The endoscopically self-guiding balloon catheter as claimed in 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.