CN116328156A - Super-smooth guiding radiography catheter for rope-type expansion bag - Google Patents

Abstract

The invention discloses a rope-shaped expansion bag super-slide guiding radiography catheter which comprises a near-end push rod and a guiding rod, wherein the rope-shaped expansion bag is arranged on the periphery of one end, close to the guiding rod, of the near-end push rod, an inlet and outlet channel is arranged in the near-end push rod, the inlet and outlet channel is a liquid inlet channel or an air inlet channel, the inlet and outlet channel is communicated to the rope-shaped expansion bag, the other end of the inlet and outlet channel is connected with an inlet and outlet pipe, and a pressure control assembly is arranged on the inlet and outlet pipe; the inside of proximal end push rod still is equipped with the through-hole along length direction, the one end of through-hole extends to guide pole department, the other end still can dismantle and be connected with luer. The rope-shaped expansion bag super-sliding guide radiography catheter has the advantages that the proximal push rod is improved, so that the rope-shaped expansion bag super-sliding guide radiography catheter has the function of local medicine application or cleaning of internal residues while having the function of guiding, expanding and contracting the expansion bag to form a flexible support, is multipurpose, reduces the use of surgical instruments, and also greatly simplifies the operation of doctors.

Description

Super-smooth guiding radiography catheter for rope-type expansion bag

Technical Field

The invention relates to the technical field of medical guide catheters, in particular to a super-slide guide radiography catheter of a rope-shaped expansion bag.

Background

Biliary tract imaging is a detection means for detecting and assisting in the treatment of gallbladder diseases, such as gall bladder stones, which are common stone diseases and are required to destroy the retrograde cholangiography of the papillary sphincter of the duodenum before minimally invasive surgery treatment is carried out, wherein the damage is irreversible, and surgical complications are caused by the damage to the papillary sphincter.

An antegrade contrast to protect the papillary sphincter cannot be achieved without the guide tube. The catheter is provided with a balloon on its outer periphery, which is usually provided with a radial space formed by the expansion of the balloon, the size of the balloon expansion needs to be precisely controlled due to the difference of the internal positions and the difference of patients, and the pressure of the balloon needs to be maintained for the operation of doctors.

In addition, in the process of stone surgery treatment, the liquid medicine needs to be injected, the broken stone remained in the channel is also cleaned after broken stone, and if other surgical instruments are frequently switched to operate, inconvenience is brought to doctors and more surgery damage is brought to patients.

Biliary tract anterograde guiding radiography is only one application scene, aims at solving irreversible damage of nipple sphincter, and also relates to super-smooth guiding radiography of natural cavity cord-shaped expansion bags of other human bodies or mammals.

Disclosure of Invention

The invention aims at solving the problems existing in the prior art and provides a rope-shaped expansion balloon super-sliding guide radiography catheter.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the super-sliding guide radiography catheter comprises a proximal push rod and a guide rod connected with the proximal push rod, wherein the proximal push rod is connected with the guide rod through a connecting sleeve, the outer periphery of one end, close to the guide rod, of the proximal push rod is provided with an expansion bag, the inside of the proximal push rod is provided with an inlet and outlet channel, the inlet and outlet channel is a liquid inlet channel or an air inlet channel, the inlet and outlet channel is communicated to the rope-shaped expansion bag, the other end of the inlet and outlet channel is connected with an inlet and outlet pipe, and the inlet and outlet pipe is provided with a pressure control component; the inside of proximal end push rod still is equipped with the through-hole along length direction, the one end of through-hole extends to guide pole department, the other end still can dismantle and be connected with luer.

The rope-shaped expansion bag super-sliding guide radiography catheter has the advantages that the proximal push rod is improved, so that the rope-shaped expansion bag super-sliding guide radiography catheter has the function of local medicine application or cleaning of internal residues while having the function of guiding, expanding and contracting the expansion bag to form a flexible support, is multipurpose, reduces the use of surgical instruments, and also greatly simplifies the operation of doctors. Can be applied to natural cavities of human bodies or animals. The contrast catheter realizes antegrade dilation guide contrast through the gall bladder puncture channel, protects sphincter muscles and can repair gall bladder puncture.

Through set up whole through-hole that link up in the near-end push rod, can utilize the through-hole is to the affected part of disease application of medicine (the liquid of giving birth to), also can utilize the through-hole is injected into the washing liquid, washs the residue in the operation in-process, like gall bladder stone broken back, can have fine garrulous residual stone, utilizes the through-hole can pour into the washing liquid into the assigned position and wash remaining or the rubble of adhesion into, has avoided switching cleaning instrument and has cleared up, makes things convenient for doctor continuous operation more.

The luer connector is connected to the outer end of the through hole, so that the luer connector is convenient to connect with a medicine injection or water injection component, and the luer connector can also play a role in temporary blocking when not in use.

The inlet and outlet channels and the through holes are two independent channels, and the two channels are not interfered with each other. The pressure control assembly is arranged on the inlet pipe and the outlet pipe so as to accurately and effectively control and stabilize the pressure of the introduced gas and expand the expansion bag to the required size.

The inlet and outlet channels can be used as an air inlet channel or a liquid inlet channel, and the liquid is used for supporting the rope-shaped expansion bag to expand or contract.

Further, the through hole is arranged at the center of the proximal push rod, the access passage is arranged eccentrically, and the arrangement is also convenient for the access passage to be communicated with the rope-shaped expansion bag.

Further, the inner diameters of the access passage and the through hole are respectively 0.1-0.5 mm, and the outer diameter of the proximal push rod is 1-1.5 mm.

Further, the rope-shaped expansion bag is sleeved on the periphery of the near-end push rod, two ends of the rope-shaped expansion bag are in sealing connection with the periphery of the near-end push rod, the radial expansion range of the rope-shaped expansion bag is 3-8 mm, and the expansion bag can be expanded to different sizes through control of gas pressure, so that the rope-shaped expansion bag is beneficial to adapting to different in-vivo operation environments. The length of the rope-shaped expansion bag is 30-80 mm.

Further, the pressure control assembly comprises a pressure sensor arranged on the inlet pipe and the outlet pipe, the pressure sensor is used for monitoring the gas pressure or the liquid pressure of the expansion bag, an electromagnetic valve is further arranged close to the pressure sensor, and the pressure sensor is electrically connected with a controller of the electromagnetic valve.

The pressure sensor can detect the gas pressure or the liquid pressure in the inlet and outlet channels in real time, and can reflect the pressure in the expansion bag; because the sizes and positions of the inlet and outlet channels and the inlet and outlet pipes are basically unchanged, according to the tension of the expansion bag, the gas with the pressure which is needed approximately for 1mm increase of the radial size of the expansion bag can be calculated, and the relation between the size change of the expansion bag and the pressure of the gas can be obtained; the calculation can be obtained by calculation through simulation software or simple mathematical calculation software, a change relation curve or function of the size of the expansion bag and the size of the gas pressure is written into the controller in a program mode, the pressure value monitored in real time by the pressure sensor is received through the controller, and the size of the expansion bag after the gas is introduced can be reversely pushed out, so that the purpose of more accurately controlling the size of the expansion bag can be achieved.

The electromagnetic valve can be timely opened and closed to enter and exit the pipe, the pressure of the expansion bag is kept, the electromagnetic valve can be opened and closed according to the received signal, the control is convenient, and other types of electric control valves can be used for the electromagnetic valve.

Furthermore, the end part of the proximal push rod is provided with a connecting end head with gradually changed size, the outer diameter of the connecting end head is the same as the outer diameter of the guide rod and is connected with the guide rod through the connecting sleeve, and the connecting sleeve is a non-sealing sleeve or a connecting sleeve with an overflow hole. The body size of the proximal push rod is larger than that of the guide rod, the connection end is arranged to facilitate the butt joint of the proximal push rod and the guide rod, and the connecting sleeve does not need to be sealed, so that a position where liquid medicine or cleaning liquid flows out can be formed.

Or an axial through hole is formed in the guide rod and is communicated with the through hole, and at the moment, a sealed connecting sleeve can be adopted to enable injected liquid to flow out of the end part of the guide rod.

Further, the rope-shaped expansion bag is a silica gel expansion bag, a polyamide expansion bag or a TPU expansion bag, and the access passage is communicated with the rope-shaped expansion bag through a radial hole.

Further, the rope-shaped expansion bag is provided with a plurality of petal-shaped structures which are arranged in a central symmetry manner, an annular channel is arranged at the position, close to the end part, of the access channel, and the annular channel is communicated with the rope-shaped expansion bag through a plurality of radial holes respectively; the periphery of the rope-shaped expansion bag is also provided with a silica gel binding layer, and a radial hole is also arranged between the annular channel and the silica gel binding layer.

Compared with the prior art, the invention has the beneficial effects that: 1. the rope-shaped expansion bag super-sliding guide radiography catheter has the functions of local application or cleaning of internal residues when the proximal push rod is improved to have the guiding function and the expansion bag expansion and contraction to form a flexible supporting function, is multipurpose, reduces the use of surgical instruments, and greatly simplifies the operation of doctors; 2. the whole through hole is formed in the near-end push rod, so that medicine can be applied to a patient by using the through hole, cleaning liquid can be injected into the through hole, residues in the operation process are cleaned, switching of cleaning instruments for cleaning is avoided, and continuous operation of doctors is facilitated; 3. the luer connector is connected to the outer end part of the through hole, so that the luer connector is convenient to connect with a medicine injection or water injection component, and the luer connector can also play a role in temporary blocking when not in use; 4. the pressure control assembly is arranged on the inlet pipe and the outlet pipe, so that the pressure of the introduced gas can be accurately and effectively controlled and stabilized, and the expansion bag can be expanded to a required size and can be kept stable.

Drawings

FIG. 1 is a schematic view of the overall structure of a rope-like dilated capsule super-smooth guided contrast catheter according to the present invention;

FIG. 2 is a schematic view in partial cross-section of a balloon-expandable super-smooth guided contrast catheter in accordance with the present invention;

FIG. 3 is a schematic cross-sectional view of the proximal pushrod of the present invention at the expansion bladder;

FIG. 4 is a schematic cross-sectional view of a proximal pushrod of the present invention at the balloon;

FIG. 5 is a schematic view of the arrangement of the proximal pushrod inlet passageway according to the present invention;

FIG. 6 is a schematic representation of the inflated state of the inflatable bladder of the present invention;

FIG. 7 is a schematic view of another structure of the guide bar of the present invention;

in the figure: 1. a proximal pushrod; 101. a connecting end; 2. a guide rod; 3. connecting sleeves; 4. an air intake passage; 5. a string-like expansion balloon; 6. an air inlet pipe; 7. a pressure sensor; 8. an electromagnetic valve; 9. a through hole; 10. a luer fitting; 11. a radial hole; 12. an annular channel; 13. a silica gel binding layer; 14. an axial through hole.

Detailed Description

The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Embodiment one:

as shown in fig. 1 to 3, the rope-shaped expansion bag super-sliding guide radiography catheter comprises a proximal push rod 1 and a guide rod 2 connected with the proximal push rod 1, wherein the proximal push rod 1 is connected with the guide rod 2 through a connecting sleeve 3, an expansion bag 5 is arranged on the periphery of one end, close to the guide rod 2, of the proximal push rod 1, an air inlet channel 4 is arranged in the proximal push rod 1, the air inlet channel 4 is communicated with the rope-shaped expansion bag 5, the other end of the air inlet channel 4 is connected with an air inlet pipe 6, and a pressure control component is arranged on the air inlet pipe 6; the inside of proximal push rod 1 still is equipped with through hole 9 along length direction, the one end of through hole 9 extends to guiding rod 2 department, the other end still can dismantle and be connected with luer 10.

The rope-shaped expansion bag super-sliding guide radiography catheter has the advantages that the proximal push rod 1 is improved, so that the rope-shaped expansion bag super-sliding guide radiography catheter has the function of local medicine application or cleaning of internal residues while having the function of guiding, expanding and contracting the expansion bag to form a flexible support, is multipurpose, reduces the use of surgical instruments, and also greatly simplifies the operation of doctors.

Through set up whole through-hole 9 that link up in the near-end push rod 1, can utilize through-hole 9 is to the disease department is applied medicine, also can utilize through-hole injection washing liquid, washs the residue in the operation in-process, can exist the broken residual calculus after, like gall bladder calculus is broken, utilizes the through-hole can pour into washing liquid into the assigned position and wash residual or the rubble of adhesion into, has avoided switching cleaning instrument and has cleared up, makes things convenient for doctor's continuous operation more.

The luer 10 is connected to the outer end of the through hole 9, so that the connection with the injection or water injection member is facilitated, and the temporary blocking function can be achieved even when the device is not in use.

The air inlet channel 4 and the through hole 9 are two independent parallel channels, and the two channels are not interfered with each other. The pressure control assembly is arranged on the air inlet pipe 6 so as to accurately and effectively control and stabilize the pressure of the introduced air and expand the expansion bag to the required size.

Further, the through hole 9 is disposed at the center of the proximal push rod 1, and the air inlet channel 4 is disposed eccentrically, which is also convenient for the air inlet channel to communicate with the string-like expansion balloon.

Further, the inner diameters of the air inlet channel 4 and the through hole 9 are respectively 0.15mm, and the outer diameter of the proximal push rod is 1.5mm.

Further, the rope-shaped expansion bag 5 is sleeved on the periphery of the proximal push rod 1, two ends of the rope-shaped expansion bag 5 are in sealing connection with the periphery of the proximal push rod 1, the radial expansion range of the rope-shaped expansion bag 5 is 3-8 mm, and the expansion bags can be expanded to different sizes through control of gas pressure, so that the expansion bag is beneficial to adapting to different in-vivo operation environments. .

Further, the pressure control assembly comprises a pressure sensor 7 arranged on the air inlet pipe 6, the pressure sensor 7 is used for monitoring the gas pressure of the expansion bag, an electromagnetic valve 8 is further arranged close to the pressure sensor 7, and the pressure sensor 7 is electrically connected with a controller of the electromagnetic valve 8.

The pressure sensor 7 can detect the gas pressure in the air inlet channel 4 in real time, and can reflect the pressure in the expansion bag 5; because the sizes and positions of the air inlet channel 4 and the air inlet pipe 6 are basically unchanged, according to the tension of the expansion bag 5, the gas with the pressure which is needed approximately for each 1mm increase of the radial size of the expansion bag can be calculated, and the relation between the size change of the expansion bag and the pressure of the gas can be obtained; the calculation can be obtained by calculation through simulation software or simple mathematical calculation software, a change relation curve or function of the size of the expansion bag and the size of the gas pressure is written into the controller in a program mode, the pressure value monitored in real time by the pressure sensor is received through the controller, and the size of the expansion bag after the gas is introduced can be reversely pushed out, so that the purpose of more accurately controlling the size of the expansion bag can be achieved.

The electromagnetic valve 8 can be set to timely open and close the air inlet pipe 6 to keep the pressure of the expansion bag 5, and the electromagnetic valve can be opened and closed according to the received signal, so that the control is convenient.

Further, a connection end 101 with a gradually-changed size is arranged at the end part of the proximal push rod 1, the outer diameter of the connection end 101 is the same as the outer diameter of the guide rod 2 and is connected with the guide rod through the connecting sleeve 3, and the connecting sleeve 3 is in a threaded sleeve. The body size of the proximal push rod 1 is larger than that of the guide rod 2, the connection end 101 is arranged to facilitate the butt joint of the proximal push rod and the guide rod, and the connecting sleeve 3 does not need to be sealed, so that a position where liquid medicine or cleaning liquid flows out can be formed.

Further, the rope-shaped expansion bag 5 is a silica gel expansion bag, and the air inlet channel 4 is communicated with the rope-shaped expansion bag 5 through a radial hole 11.

Embodiment two:

this embodiment differs from the first embodiment in that another configuration of the expansion bladder is provided.

As shown in fig. 4 to 6, the rope-shaped expansion bags 5 are of a plurality of petal-shaped structures which are arranged in a central symmetry manner, an annular channel 12 is arranged at the position, close to the end part, of the air inlet channel 4, and the annular channel 12 is respectively communicated with each petal of rope-shaped expansion bags 5 through a plurality of radial holes 11; the periphery of the rope-shaped expansion bag 5 is also provided with a silica gel binding layer 13, and a radial hole 11 is also arranged between the annular channel 12 and the silica gel binding layer 13.

The flap arc-shaped expansion bag is adopted, so that the inflatable bag has better expansion performance after being inflated; the silica gel binding layer 13 is arranged to play a role in protection and binding; in the inflated state, the expansion bladder 5 is twisted, so that the silicone binding layer 13 is also twisted; when the expansion bag 5 is contracted from the expanded state, the silicone binding layer 13 is reversely twisted to generate an anti-rotation force and a restoring force to the expansion bag 5, so as to drive the rope-shaped expansion bag 5 to contract at one side so as to be folded, and the rope-shaped expansion bag 5 can basically recover to the original folded state so as to be used later.

Embodiment III:

the present embodiment differs from the first embodiment in that a guide bar of another structure is provided.

As shown in fig. 7, an axial through hole 14 is provided in the guide rod 2, and the axial through hole 14 communicates with the through hole 9, and a sealed connecting sleeve 3 may be used to allow the injected liquid to flow out from the end of the guide rod 2.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The rope-shaped expansion bag super-slide guiding radiography catheter comprises a near-end push rod and a guiding rod connected with the near-end push rod, wherein the near-end push rod is connected with the guiding rod through a connecting sleeve; the inside of proximal end push rod still is equipped with the through-hole along length direction, the one end of through-hole extends to guide pole department, the other end still can dismantle and be connected with luer.

2. The balloon-expandable super-slide guided contrast catheter of claim 1, wherein the through-hole is disposed at a center of the proximal pushrod and the aspiration channel is disposed eccentrically.

3. The rope-shaped expansion balloon super-sliding guide radiography catheter according to claim 1, wherein the inner diameters of the air inlet channel or the liquid inlet channel and the through hole are respectively 0.1-0.5 mm, and the outer diameter of the proximal push rod is 1-1.5 mm.

4. The rope-shaped expansion bag super-slide guiding radiography catheter according to claim 1, wherein the rope-shaped expansion bag is sleeved on the periphery of the proximal push rod, two ends of the rope-shaped expansion bag are in sealing connection with the periphery of the proximal push rod, the radial expansion range of the rope-shaped expansion bag is 3-8 mm, and the length of the rope-shaped expansion bag is 30-80 mm.

5. The rope-shaped expansion balloon super-slide guiding radiography catheter according to claim 1, wherein the pressure control assembly comprises a pressure sensor arranged on the inlet pipe and used for monitoring the gas pressure or the liquid pressure of the expansion balloon, an electromagnetic valve is further arranged near the pressure sensor, and the pressure sensor is electrically connected with a controller of the electromagnetic valve.

6. The super-smooth guided angiography catheter of claim 1, wherein said proximal pushrod has a tapered connector at its end, said connector having an outer diameter equal to the outer diameter of said guide rod and connected by said connector sleeve.

7. The rope-like block super-slide guiding radiography catheter of claim 1, wherein said guiding rod is provided with an axial through hole, said axial through hole is communicated with said through hole.

8. The balloon-expandable super-slide guided contrast catheter of claim 1, wherein the balloon-expandable is a silicone balloon-expandable, a polyamide balloon-expandable, or a TPU balloon-expandable, the access port being in communication with the balloon-expandable through a radial hole.

9. The rope-shaped expansion balloon super-slide guiding radiography catheter according to claim 1, wherein the rope-shaped expansion balloon is a plurality of petal-shaped structures which are arranged in a central symmetry manner, an annular channel is arranged at the position, close to the end part, of the access channel, and the annular channel is communicated with the rope-shaped expansion balloon through a plurality of radial holes respectively; the periphery of the rope-shaped expansion bag is also provided with a silica gel binding layer, and a radial hole is also arranged between the annular channel and the silica gel binding layer.

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