CN111249602A

CN111249602A - Medical PTCD catheter

Info

Publication number: CN111249602A
Application number: CN202010242813.7A
Authority: CN
Inventors: 吴忠隐; 刘双庆; 张弘; 霍静; 高建国
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-06-09

Abstract

The invention provides a medical PTCD catheter, relates to the technical field of medical supplies, and solves the technical problem that in the prior art, PTCD external drainage causes that most patients need to take bile orally, so that most patients cannot accept the PTCD external drainage. The device comprises a drainage catheter, wherein the side part of the drainage catheter is provided with a plurality of drainage holes; the sacculus is located feed liquor hole with go out between the liquid hole the two, in the drainage pipe can insert the biliary tract just feed liquor hole with it is located respectively to go out the liquid hole the both sides of the narrow section or the block section of biliary tract, bile in the biliary tract can pass through in proper order feed liquor hole, the inside of drainage pipe with it realizes internal drainage to go out the liquid hole. The invention is used for the biliary tract drainage through the percutaneous hepatic puncture.

Description

Medical PTCD catheter

Technical Field

The invention relates to the technical field of medical supplies, in particular to a medical PTCD catheter.

Background

The biliary tract has the function of transporting bile secreted by the liver to the intestinal tract, and promotes the absorption of fat, cholesterol, vitamins and the like. In clinical medicine, bile duct obstruction can be caused by malignant tumors such as bile duct cancer, liver cancer, pancreatic cancer, metastatic cancer and the like, so that bile cannot be naturally discharged into intestinal tracts, and the prognosis of patients is seriously influenced.

The prior art provides two surgical approaches to address the problem of bile transport caused by biliary obstruction. One method is as follows: the stent is respectively implanted in the bile duct and the duodenal papilla of a patient so as to discharge bile into duodenum, however, the operation of implanting the stent into the bile duct is difficult and expensive, cholangitis is easy to cause, the patient suffers great pain, and the stent can be extruded and blocked along with the proliferation of cancer cells in the bile duct, so that the feasibility of the secondary operation is poor; the other method is as follows: through PTCD (through skin liver puncture biliary tract drainage) with bile drainage to external drainage bag preserve, get into the intestinal through patient's oral administration again, nevertheless oral experience is extremely poor, and most patients all can't accept, also can influence the quality of life of bile simultaneously.

Disclosure of Invention

The invention aims to provide a medical PTCD catheter, which aims to solve the technical problem that in the prior art, the PTCD extracorporeal drainage has the problem that most patients cannot accept oral bile. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

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

the medical PTCD catheter comprises a drainage catheter, wherein the side part of the drainage catheter is provided with a plurality of drainage holes;

the drainage hole includes feed liquor hole and play liquid hole, in drainage catheter can insert the biliary tract just the feed liquor hole with it is located respectively to go out the liquid hole the narrow section of biliary tract or the both sides of block section, bile in the biliary tract can pass through in proper order the feed liquor hole drainage catheter's inside with it realizes internal drainage to go out the liquid hole.

Optionally, the medical PTCD catheter further comprises a balloon, the drainage catheter passes through the balloon and is connected with the balloon, the balloon is located between the liquid inlet hole and the liquid outlet hole, and the balloon is inflated to press the malignant tumor or expand the narrow section or the occlusion section of the biliary tract to maintain bile flow in the biliary tract.

Optionally, medical PTCD pipe still includes gas tube and inflation equipment, the gas tube is located drainage catheter's inside, the both ends of gas tube are all passed drainage catheter's lateral part just the gas tube with drainage catheter's lateral part sealing connection, the one end of gas tube with the sacculus is linked together, the other end of gas tube with inflation equipment is connected.

Optionally, an air pressure gauge and a control valve are arranged on the inflation tube, and both the air pressure gauge and the control valve are close to the inflation device.

Optionally, a through hole is formed in the balloon, the drainage catheter passes through the through hole, and the outer wall of the drainage catheter is fixedly connected with the inner wall of the through hole.

Optionally, the two ends of the drainage catheter are respectively an insertion end and a limiting end, the insertion end is arranged in a tip structure and can extend into the biliary tract, the limiting end is located outside the biliary tract, and the drainage hole and the balloon are close to the insertion end.

Optionally, medical PTCD pipe still includes connecting wire and locking equipment, the connecting wire is located in the drainage pipe, the one end of connecting wire wear out the drainage pipe and with insert end fixed connection, locking equipment with spacing end is connected, the other end of connecting wire wear out the drainage pipe and with locking equipment is connected, the pulling the connecting wire enables insert the end bending.

Optionally, locking equipment includes conduit joint and joint spare, conduit joint with spacing end is connected, joint spare can with the conduit joint is connected, the connecting wire passes conduit joint with joint spare is connected, insert the end crooked back, expose outside the conduit joint the connecting wire can twine on the conduit joint and through joint spare with the conduit joint is connected and is used for maintaining the crooked state that inserts the end.

Optionally, a clamping groove and a through hole are formed in the side surface of the conduit joint, the clamping piece is connected with the clamping groove in a clamping mode, and the connecting line in the drainage conduit can be exposed out of the drainage conduit through the through hole; or the connecting wire penetrates through the end part of the conduit joint and is exposed outside the drainage conduit, and the connecting wire exposed outside the conduit joint can be wound in the clamping groove.

Optionally, an external thread is arranged on the conduit joint; the joint spare includes handheld portion and clamping part, handheld portion with clamping part fixed connection, the clamping part can with the pipe joint is connected, the one end of connecting wire is fixed handheld portion or on the clamping part.

According to the medical PTCD catheter provided by the invention, when the drainage catheter is inserted into the biliary tract and crosses over the narrow section or the blocked section of the biliary tract 7, the liquid inlet hole and the liquid outlet hole are respectively positioned at two sides of the narrow section or the blocked section of the biliary tract 7, so that bile at one side of the narrow section or the blocked section of the biliary tract 7 can flow into the drainage catheter through the liquid inlet hole and then flow into the other side of the narrow section or the blocked section of the biliary tract 7 through the liquid outlet hole, the internal drainage of the bile is realized, the bile is not required to be orally taken by a patient, and the technical problem that the patient needs to orally take the bile in the external drainage of the PTCD in the prior art and cannot be accepted by most patients is solved.

The preferred technical scheme of the invention can at least produce the following technical effects:

the balloon on the medical PTCD catheter plays a role in dilating the biliary tract, so that bile can flow into the intestinal tract through a natural channel, and simultaneously plays a role in internal drainage, and can be repeatedly dilated and used within the use validity period along with the progress of an illness state such as biliary tract restenosis, so that the biliary tract smoothness is guaranteed, the pain of a patient is reduced, the cost of the patient is reduced, in addition, the balloon can maintain the biliary tract smoothness, the blockage caused by the fact that malignant tumors grow and squeeze the drainage catheter is avoided, and when the balloon is used, the balloon needs to be aligned to the narrow section or the blocked section of the biliary tract, and the balloon can be inflated according to the diameter of the biliary tract.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a medical PTCD catheter provided by an embodiment of the present invention;

FIG. 2 is a schematic structural view of a connecting wire of a medical PTCD catheter provided by the embodiment of the invention, which passes through the end part of a catheter joint;

FIG. 3 is a structural schematic view of an insertion end bend of a medical PTCD catheter provided by an embodiment of the present invention;

FIG. 4 is a block diagram at A in FIG. 3;

fig. 5 is a side view of a balloon of a medical PTCD catheter provided by an embodiment of the present invention;

FIG. 6 is a simplified schematic illustration of insertion of a medical PTCD catheter into the hepatic duct provided by an embodiment of the present invention;

in figure 1, a drainage catheter; 11. a drainage hole; 111. a liquid inlet hole; 112. a liquid outlet hole; 12. an insertion end; 13. a limiting end; 2. a balloon; 21. a through hole; 3. an inflation tube; 31. a barometer; 32. a control valve; 4. an inflation device; 5. a connecting wire; 6. locking the equipment; 61. a catheter adapter; 611. a clamping groove; 612. A through hole; 613. an external thread; 62. a clamping piece; 621. a hand-held portion; 622. a clamping portion; 7. the biliary tract; 8. And (3) malignant tumors.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The invention provides a medical PTCD catheter which comprises a drainage catheter 1, wherein the side part of the drainage catheter 1 is provided with a plurality of drainage holes 11, and the number of the drainage holes 11 is multiple; the drainage hole 11 comprises a liquid inlet hole 111 and a liquid outlet hole 112, the drainage catheter 1 can be inserted into the biliary tract 7, the liquid inlet hole 111 and the liquid outlet hole 112 are respectively positioned at two sides of a narrow section or an occlusion section of the biliary tract 7, and bile in the biliary tract 7 can sequentially pass through the liquid inlet hole 111, the interior of the drainage catheter 1 and the liquid outlet hole 112 to realize internal drainage. According to the medical PTCD catheter provided by the invention, when the drainage catheter 1 is inserted into the biliary tract 7 and crosses over the narrow section or the block section of the biliary tract 7, the liquid inlet hole 111 and the liquid outlet hole 112 are respectively positioned at two sides of the narrow section or the block section of the biliary tract 7, so that bile at one side of the narrow section or the block section of the biliary tract 7 can flow into the drainage catheter 1 through the liquid inlet hole 111 and then flow into the other side of the narrow section or the block section of the biliary tract 7 through the liquid outlet hole 112, bile drainage in vivo is realized, and oral bile administration for a patient is not required, so that the technical problem that the oral bile is required for the patient in the PTCD external drainage in the prior art and cannot be accepted by most patients is solved.

As an alternative embodiment, the medical PTCD catheter further comprises a balloon 2, the drainage catheter 1 passes through the balloon 2 and the drainage catheter 1 is connected with the balloon 2, the balloon 2 is positioned between the liquid inlet hole 111 and the liquid outlet hole 112, and the balloon 2 is inflated to press the malignant tumor 8 or expand the narrow section or the occlusion section of the biliary tract 7 to maintain bile flow in the biliary tract 7. The saccule 2 on the medical PTCD catheter plays a role in dilating the biliary tract 7, so that bile can flow into an intestinal tract through a natural channel, and simultaneously plays a role in internal drainage, and can be repeatedly dilated and used within the use validity period of the saccule 2 after the biliary tract 7 is restenosis along with the progress of an illness, so that the biliary tract 7 is ensured to be unobstructed, the pain of a patient is reduced, and the cost of the patient is reduced, in addition, the saccule 2 can maintain the patency of the biliary tract 7, the blockage caused by the fact that malignant tumor 8 grows and extrudes the drainage catheter 1 is avoided, if the saccule 2 is used, the saccule 2 needs to be aligned to a narrow section or an occlusion section of the biliary tract 7, and the saccule 2 can be inflated.

As an optional implementation mode, the medical PTCD catheter further comprises an inflation tube 3 and an inflation device 4, the inflation tube 3 is located inside the drainage catheter 1, both ends of the inflation tube 3 penetrate through the side portion of the drainage catheter 1, the inflation tube 3 is hermetically connected with the side portion of the drainage catheter 1, one end of the inflation tube 3 is communicated with the balloon 2, when the end portion of the inflation tube 3 extends into the through hole 21, the end portion of the inflation tube 3 penetrates through the side portion of the drainage catheter 1 and the inner wall of the through hole 21, so that the inside of the balloon 2 is communicated with the inflation tube 3; the other end of the inflation tube 3 is connected with the inflation device 4, when the end part of the inflation tube 3 is close to the limit end 13 of the drainage catheter 1, the end part of the inflation tube 3 passes through the side part of the drainage catheter 1 and is connected with the inflation device 4, and when the drainage catheter 1 is inserted into the biliary tract 7, the inflation tube 3 can not be exposed in the human body and influence the drainage catheter 1.

In an alternative embodiment, the inflation tube 3 is provided with a barometer 31 and a control valve 32, and both the barometer 31 and the control valve 32 are close to the inflation device 4. The barometer 31 detects the air pressure in the balloon 2, and the control valve 32 controls the flow state of the inflation tube 3.

In an alternative embodiment, the balloon 2 is provided with a through hole 21, the drainage catheter 1 passes through the through hole 21, the outer wall of the drainage catheter 1 is fixedly connected with the inner wall of the through hole 21, and the drainage catheter 1 keeps a flowing state in the process of inflating the balloon 2.

As an optional embodiment, the two ends of the drainage catheter 1 are respectively an insertion end 12 and a limiting end 13, the insertion end 12 is a tip structure and can extend into the biliary tract 7, the limiting end 13 is located outside the biliary tract 7, and the drainage hole 11 and the balloon 2 are both close to the insertion end 12.

As an optional implementation manner, the medical PTCD catheter further includes a connecting wire 5 and a locking device 6, the connecting wire 5 is located in the drainage catheter 1, one end of the connecting wire 5 penetrates out of the drainage catheter 1 and is fixedly connected with the insertion end 12, when one end of the connecting wire 5 is close to the insertion end 12, one end of the connecting wire 5 penetrates out of the side portion of the drainage catheter 1, the locking device 6 is connected with the limiting end 13, the other end of the connecting wire 5 penetrates out of the drainage catheter 1 and is connected with the locking device 6, the other end of the connecting wire 5 penetrates out of the limiting end 13 and is connected with the locking device 6, and the insertion end 12 can be bent by pulling the. The insertion end 12 is bent in order to hold the drainage catheter 1 in place so that the drainage catheter 1 cannot become detached in the biliary tract 7.

As an alternative embodiment, the locking device 6 includes a catheter adapter 61 and a clamping member 62, the catheter adapter 61 is connected with the position-limiting end 13, the clamping member 62 can be clamped with the catheter adapter 61, the connecting wire 5 passes through the catheter adapter 61 and is connected with the clamping member 62, after the insertion end 12 is bent, the connecting wire 5 exposed out of the catheter adapter 61 can be wound on the catheter adapter 61 and is connected with the catheter adapter 61 through the clamping member 62 to maintain the bent state of the insertion end 12.

As an optional embodiment, the side surface of the catheter connector 61 is provided with a clamping groove 611 and a through hole 612, the clamping piece 62 is clamped and connected with the clamping groove 611, the connecting wire 5 in the drainage catheter 1 can be exposed out of the drainage catheter 1 through the through hole 612, and the diameter of the through hole 612 can only be suitable for the connecting wire 5 to pass through; or the connecting wire 5 passes through the end of the catheter joint 61 and is exposed outside the drainage catheter 1, and the connecting wire 5 exposed outside the catheter joint 61 can be wound in the clamping groove 611.

In an alternative embodiment, the conduit fitting 61 is provided with external threads 613. The catheter connector 61 can be connected with a plug so as to prevent bile from flowing out of the limiting end 13; the catheter connector 61 can also be connected with a drainage bag through a catheter, and can also be used for PTCD extracorporeal drainage. The joint piece 62 comprises a handheld portion 621 and a clamping portion 622, the handheld portion 621 is fixedly connected with the clamping portion 622, the clamping portion 622 can be connected with the pipe connector 61 in a clamped mode, the clamping portion 622 can be clamped on the joint groove 611, and one end of the connecting wire 5 is fixed on the handheld portion 621 or the clamping portion 622.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A medical PTCD catheter, characterized by comprising a drainage catheter (1), wherein,

the lateral part of the drainage catheter (1) is provided with a plurality of drainage holes (11), and the number of the drainage holes (11) is multiple;

drainage hole (11) are including feed liquor hole (111) and play liquid hole (112), drainage catheter (1) can insert in biliary tract (7) just feed liquor hole (111) with it is located respectively to go out liquid hole (112) the both sides of the narrow section or the block section of biliary tract (7), bile in biliary tract (7) can pass through in proper order feed liquor hole (111) the inside of drainage catheter (1) with go out liquid hole (112) and realize internal drainage.

2. The medical PTCD catheter as claimed in claim 1, further comprising a balloon (2), wherein the drainage catheter (1) is passed through the balloon (2) and the drainage catheter (1) is connected with the balloon (2), wherein the balloon (2) is positioned between the fluid inlet hole (111) and the fluid outlet hole (112), and wherein the balloon (2) is inflated to compress a malignant tumor (8) or expand a stenosis or occlusion of the biliary tract (7) to maintain bile flow in the biliary tract (7).

3. The medical PTCD catheter as claimed in claim 2, further comprising an inflation tube (3) and an inflation device (4), wherein the inflation tube (3) is positioned inside the drainage catheter (1), both ends of the inflation tube (3) penetrate through the side part of the drainage catheter (1) and the inflation tube (3) is hermetically connected with the side part of the drainage catheter (1), one end of the inflation tube (3) is communicated with the balloon (2), and the other end of the inflation tube (3) is connected with the inflation device (4).

4. Medical PTCD catheter according to claim 3, wherein a barometer (31) and a control valve (32) are arranged on the inflation tube (3), both the barometer (31) and the control valve (32) being close to the inflation device (4).

5. The medical PTCD catheter as claimed in claim 2, wherein a through hole (21) is arranged on the balloon (2), the drainage catheter (1) passes through the through hole (21) and the outer wall of the drainage catheter (1) is fixedly connected with the inner wall of the through hole (21).

6. The medical PTCD catheter as claimed in claim 2, wherein the two ends of the drainage catheter (1) are respectively an insertion end (12) and a limiting end (13), the insertion end (12) is arranged in a tip structure and can extend into the biliary tract (7), the limiting end (13) is positioned outside the biliary tract (7), and the drainage hole (11) and the balloon (2) are both close to the insertion end (12).

7. The medical PTCD catheter as claimed in claim 6, further comprising a connecting wire (5) and a locking device (6), wherein the connecting wire (5) is positioned in the drainage catheter (1), one end of the connecting wire (5) penetrates out of the drainage catheter (1) and is fixedly connected with the insertion end (12), the locking device (6) is connected with the limiting end (13), the other end of the connecting wire (5) penetrates out of the drainage catheter (1) and is connected with the locking device (6), and the insertion end (12) can be bent by pulling the connecting wire (5).

8. The medical PTCD catheter as claimed in claim 7, wherein the locking device (6) comprises a catheter connector (61) and a clamping member (62), the catheter connector (61) is connected with the limiting end (13), the clamping member (62) can be connected with the catheter connector (61) in a clamping manner, the connecting wire (5) penetrates through the catheter connector (61) to be connected with the clamping member (62), and after the insertion end (12) is bent, the connecting wire (5) exposed out of the catheter connector (61) can be wound on the catheter connector (61) and connected with the catheter connector (61) through the clamping member (62) to maintain the bent state of the insertion end (12).

9. The medical PTCD catheter as claimed in claim 8, wherein a clamping groove (611) and a through hole (612) are arranged on the side surface of the catheter connector (61), the clamping piece (62) is connected with the clamping groove (611) in a clamping mode, and the connecting wire (5) in the drainage catheter (1) can be exposed out of the drainage catheter (1) through the through hole (612); or the connecting wire (5) passes through the end part of the catheter joint (61) and is exposed out of the drainage catheter (1), and the connecting wire (5) exposed out of the catheter joint (61) can be wound in the clamping groove (611).

10. The medical PTCD catheter as claimed in claim 8, wherein the catheter hub (61) is provided with an external thread (613); joint spare (62) are including handheld portion (621) and clamping part (622), handheld portion (621) with clamping part (622) fixed connection, clamping part (622) can with pipe joint (61) joint is connected, the one end of connecting wire (5) is fixed handheld portion (621) or on clamping part (622).