CN209696032U - A kind of pigtail drainage catheter being not easily broken - Google Patents

Abstract

The utility model provides a kind of pigtail drainage catheter being not easily broken, including straight tube, connector and cushion collar.Hollow connector is fixedly connected with the right end of straight tube, and connector is connected to straight tube, and the outer diameter of connector is greater than the outer diameter of straight tube.Preferably, connector includes handheld terminal and the connecting pin of connection, and the outer diameter of handheld terminal is greater than the outer diameter of connecting pin, and handheld terminal is located at the left end of connecting pin, and the center overlapping of axles of the central axis of handheld terminal and connecting pin.Further, the external dense arrangement of handheld terminal has the more friction lines for increasing friction force, and more friction lines, each parallel to the central axis of handheld terminal, more friction lines are an integral molding structure with handheld terminal.In practical applications, screw thread is distributed in the outside of connecting pin.The pigtail drainage catheter of the utility model has installed cushion collar additional between straight tube and connector, and by straight tube and connector nature transition, the intersection of straight tube and connector will not be bent, and straight tube would not also twist off.

Description

A non-breakable pig tail drainage catheter

technical field

The utility model relates to the technical field of medical devices, in particular to a pig tail drainage catheter which is not easily broken.

Background technique

The percutaneous puncture of the pigtail drainage catheter in the prior art gradually expands the minimally invasive hole to the required size through the method of puncture expansion, and then guides the pigtail drainage catheter into the lesion through a guide wire, and the front end of the catheter is processed into a tapered Wedge-shaped to facilitate entry into the body through dilating holes. At present, the pigtail drainage catheter includes a hose and a connector. After the drainage catheter is inserted into the patient's body, the patient needs to move continuously, which in turn drives the drainage catheter to bend and twist continuously. Due to the high hardness of the connector, the hardness of the hose is relatively small. After repeated friction between the hose, the hose is easily broken, causing the medicine or flushing fluid inside to flow out from the fracture. And, present connector outer diameter is greater than flexible pipe outer diameter, has just formed a step, and the connector is hard in addition, if the patient presses the connector under the body when sleeping, it is just very uncomfortable.

Utility model content

In view of the above problems, the utility model proposes a pig tail drainage catheter which is not easy to break, and the purpose is to solve the problem that the hose is easy to be broken.

In order to achieve the above object, the utility model adopts the following technical solutions:

The utility model proposes a pig tail drainage catheter that is not easy to break, including a straight pipe, a joint and a buffer sleeve; the hollow joint is fixedly connected to the right end of the straight pipe, and the joint is connected to the straight pipe, so that The outer diameter of the joint is larger than the outer diameter of the straight pipe; the buffer sleeve is integrally formed, the middle of the outside of the buffer sleeve is a cylinder, and the left and right ends of the outside of the buffer sleeve are both sides. Convex circular cone type, the inside of the buffer sleeve has a first hole and a second hole, the first hole is located at the left end of the second hole, the central axis of the first hole and the second hole The central axis coincides, the first hole and the second hole communicate with each other and pass through the left and right ends of the buffer sleeve, the diameter of the first hole is not greater than the outer diameter of the straight pipe, the second hole The diameter of the second hole is not larger than the outer diameter of the joint, and the diameter of the first hole is smaller than the diameter of the second hole, the buffer sleeve is movably sleeved on the outer periphery of the straight pipe, and the A buffer sleeve is located at the left end of the joint.

Preferably, the joint includes a connected hand-held end and a connecting end, the outer diameter of the hand-held end is larger than the outer diameter of the connecting end, the hand-held end is located at the left end of the connecting end, and the central axis of the hand-held end is aligned with the connecting end. The central axes of the above-mentioned connecting ends are coincident.

Preferably, there are a plurality of friction lines densely arranged on the outside of the hand-held end for increasing friction, and the plurality of friction lines are all parallel to the central axis of the hand-held end, and the plurality of friction lines are connected to the The hand-held end is a one-piece molding structure.

Preferably, threads are distributed on the outside of the connecting end.

Preferably, the non-breakable pigtail drainage catheter of the present invention also includes an elbow, the curled elbow is fixedly connected to the left end of the straight pipe in a communication manner, and a plurality of small holes are distributed on the inner side of the elbow .

Preferably, the hardness of the buffer sleeve is greater than that of the straight pipe, and the hardness of the buffer sleeve is smaller than that of the joint.

Preferably, the axial length of the second hole is greater than the axial length of the joint.

Compared with the prior art, the pigtail drainage catheter of the utility model is equipped with a buffer sleeve between the straight tube and the joint. The shape of the inside of the buffer sleeve is set according to the shape of the straight tube and the joint. , the surface is a smooth curved surface, which makes a natural transition between the straight pipe and the joint, and the junction between the straight pipe and the joint will not be bent, and the straight pipe will not be twisted. Moreover, the buffer sleeve covers the joints inside, and the human body does not directly contact the joints, but contacts with the smooth buffer sleeve, which greatly improves the comfort of the patient, even if the buffer sleeve is accidentally pressed under the body, he will not feel uncomfortable. In addition, the buffer sleeve of the utility model is not put on the joint when it is not in use, but has a movable design. After the joint is connected, the buffer sleeve can be moved, and the buffer sleeve can completely cover the entire joint inside. It is also more convenient to operate.

Description of drawings

Fig. 1 is the overall schematic diagram of the unused pig tail drainage catheter which is not easy to break according to an embodiment of the present invention;

Fig. 2 is a schematic cross-sectional view of a buffer sleeve according to an embodiment of the present invention;

Fig. 3 is the overall schematic diagram of the non-breakable pig tail drainage catheter in use according to an embodiment of the present invention;

In the figure: 1-straight pipe; 2-joint; 21-hand-held end; 22-connection end; 3-buffer sleeve; 31-first hole; 32-second hole; 4-bent pipe; -Connecting pipe.

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present utility model, the detailed description is as follows in conjunction with the embodiments.

Please refer to Fig. 1 and Fig. 2 in combination. Fig. 1 is an overall schematic diagram of an unbreakable pigtail drainage catheter of an embodiment of the present invention when not in use, and Fig. 2 is a schematic cross-sectional view of a buffer sleeve of an embodiment of the present invention. The utility model relates to a non-breakable pig tail drainage catheter, which comprises a straight pipe 1, a joint 2 and a buffer sleeve 3.

The hollow joint 2 is fixedly connected with the right end of the straight pipe 1 , and the joint 2 communicates with the straight pipe 1 , and the outer diameter of the joint 2 is larger than that of the straight pipe 1 . Preferably, the joint 2 includes a connected hand-held end 21 and a connecting end 22, the outer diameter of the hand-held end 21 is greater than the outer diameter of the connecting end 22, the hand-held end 21 is located at the left end of the connecting end 22, and the central axis of the hand-held end 21 is connected to the connecting end. The central axes of 22 coincide. Further, there are multiple friction lines densely arranged on the outside of the handheld end 21 to increase the friction force, and the multiple friction lines are all parallel to the central axis of the handheld end 21, and the multiple friction lines and the handheld end 21 are integrally formed. . In practical applications, threads are distributed on the outside of the connecting end 22 .

The buffer sleeve 3 is integrally formed, the middle of the outside of the buffer sleeve 3 is a cylinder, the left and right ends of the outside of the buffer sleeve 3 are circular truncated sides with convex arc surfaces, and the inside of the buffer sleeve 3 has a first hole 31 And the second hole 32, the first hole 31 is located at the left end of the second hole 32, the central axis of the first hole 31 coincides with the central axis of the second hole 32, the first hole 31 and the second hole 32 communicate with each other and pass through the buffer At the left and right ends of the sleeve 3, the diameter of the first hole 31 is not greater than the outer diameter of the straight pipe 1, the diameter of the second hole 32 is not greater than the outer diameter of the joint 2, and the diameter of the first hole 31 is smaller than the diameter of the second hole 32 , the buffer sleeve 3 is movably sleeved on the outer circumference of the straight pipe 1 , and the buffer sleeve 3 is located at the left end of the joint 2 .

Preferably, the non-breakable pigtail drainage catheter of the present utility model also includes an elbow 4, which is fixedly connected to the left end of the straight pipe 1 in a communication manner, and a plurality of small holes 41 are distributed on the inner side of the elbow 4. When When the elbow 4 is located in the patient's body, the medicinal liquid or flushing liquid can flow out from the small hole 41 for further treatment.

Please refer to FIG. 1 and FIG. 3 in combination. FIG. 3 is an overall schematic view of the non-breakable pigtail drainage catheter in use according to an embodiment of the present invention. The specific operation method is as follows: first, connect the connecting end 22 of the joint 2 with the connecting pipe 5, and the connecting pipe 5 communicates with the equipment containing the liquid medicine or flushing liquid. There are also threads, and the connecting end 22 can be screwed in the connecting pipe 5 by holding the hand-held end 21. The friction line on the hand-held end 21 can effectively increase the friction between it and the hand; then, move the buffer sleeve 3 to the right, Preferably, the axial length of the second hole 32 is greater than the axial length of the joint 2, so that the buffer sleeve 3 can be moved to its rightmost end beyond the junction of the joint 2 and the connecting pipe 5, that is, the second hole 32 Sleeve on the outside of the joint 2 and the connecting pipe 5, the first hole 31 is set on the outside of the straight pipe 1, the step between the first hole 31 and the second hole 32 is stuck at the junction of the joint 2 and the straight pipe 1, this design It can prevent the buffer sleeve 3 from moving to the right automatically, thereby preventing the joint 2 from being exposed again; finally, the elbow 4 is slowly inserted into the patient's body, and the connecting tube 5 passes through the straight tube 1 and the elbow 4 in turn to inject the medicinal solution or flushing solution into the patient's body . In practical application, the hardness of the buffer sleeve 3 is greater than that of the straight pipe 1, and the hardness of the buffer sleeve 3 is smaller than that of the joint 2, so that bending at the junction of the straight pipe 1 and the joint 2 can be effectively prevented, and the straight pipe 1 will not be twisted.

Compared with the prior art, the pigtail drainage catheter of the utility model is equipped with a buffer sleeve between the straight tube and the joint. The shape of the inside of the buffer sleeve is set according to the shape of the straight tube and the joint. , the surface is a smooth curved surface, which makes a natural transition between the straight pipe and the joint, and the junction between the straight pipe and the joint will not be bent, and the straight pipe will not be twisted. Moreover, the buffer sleeve covers the joint inside, so that the human body does not directly contact the joint, but contacts with the smooth buffer sleeve, which greatly improves the comfort of the patient, even if the buffer sleeve is accidentally pressed under the body, he will not feel uncomfortable. In addition, the buffer sleeve of the utility model is not put on the joint when it is not in use, but is designed to be movable. The buffer sleeve can be moved after the joint is connected, and the buffer sleeve can completely cover the entire joint inside. It is also more convenient to operate.

The utility model has been described by the above-mentioned relevant embodiments, but the above-mentioned embodiments are only examples for implementing the utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the utility model all belong to the patent protection scope of the utility model.

Claims (7)

1. A pigtail drainage catheter that is not easy to break is characterized in that it comprises a straight pipe, a joint and a buffer sleeve; the hollow joint is fixedly connected to the right end of the straight pipe, and the joint is communicated with the straight pipe, The outer diameter of the joint is larger than the outer diameter of the straight pipe; the buffer sleeve is integrally formed, the middle of the outside of the buffer sleeve is a cylinder, and the left and right ends of the outside of the buffer sleeve are both sides. Convex circular shape with convex arc surface, the interior of the buffer sleeve has a first hole and a second hole, the first hole is located at the left end of the second hole, the central axis of the first hole and the second hole The central axes of the holes are coincident, the first hole and the second hole communicate with each other and pass through the left and right ends of the buffer sleeve, the diameter of the first hole is not greater than the outer diameter of the straight pipe, the The diameter of the second hole is not larger than the outer diameter of the joint, and the diameter of the first hole is smaller than the diameter of the second hole, the buffer sleeve is movably sleeved on the outer periphery of the straight pipe, and the The buffer sleeve is located at the left end of the joint. 2. A kind of unbreakable pigtail drainage catheter as claimed in claim 1, characterized in that said connector comprises a connected hand-held end and a connecting end, the outer diameter of said hand-held end is greater than the outer diameter of said connecting end, said The handheld end is located at the left end of the connecting end, and the central axis of the handheld end coincides with the central axis of the connecting end. 3. A kind of unbreakable pigtail drainage catheter as claimed in claim 2, characterized in that there are many friction lines densely arranged on the outside of the hand-held end for increasing the friction force, and the plurality of friction lines are all Parallel to the central axis of the handle end, a plurality of the friction lines are integrally formed with the handle end. 4. A non-breakable pigtail drainage catheter as claimed in claim 3, characterized in that threads are distributed on the outside of the connecting end. 5. A kind of unbreakable pigtail drainage catheter as claimed in claim 1, characterized in that it also includes an elbow, the curled elbow is fixedly connected to the left end of the straight pipe in communication, the elbow of the elbow There are many small holes distributed inside. 6. A non-breakable pigtail drainage catheter as claimed in claim 1, characterized in that the hardness of the buffer sleeve is greater than that of the straight tube, and the hardness of the buffer sleeve is smaller than that of the joint. 7. The non-breakable pigtail drainage catheter according to claim 1, characterized in that the axial length of the second hole is greater than the axial length of the joint.