CN217067351U

CN217067351U - Ureteral catheter assembly

Info

Publication number: CN217067351U
Application number: CN202220052002.5U
Authority: CN
Inventors: 李�权; 邓君鹏; 谢建军; 阙宏亮; 曹文舟; 沈华
Original assignee: Suzhou Municipal Hospital
Current assignee: Suzhou Municipal Hospital
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-07-29
Anticipated expiration: 2032-01-10

Abstract

The utility model relates to a ureteral catheter subassembly, ureteral catheter subassembly includes: a conduit having a lead-in end and a water injection end; and the water injection connecting piece is provided with a first pair of interfaces butted with the water injection end of the conduit, and a water injection interface communicated with the first pair of interfaces. The water injection device is connected with the water injection interface of the water injection connecting piece, so that the ureteral catheter assembly and the water injection device can be conveniently connected, and the water injection efficiency is improved.

Description

Ureteral catheter assembly

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a ureter catheter subassembly.

Background

Urinary calculus is one of the most common diseases in urinary surgery, and percutaneous nephrolithotomy is a relatively common minimally invasive treatment method. The brief preoperative preparation process is as follows: after a patient is anesthetized, the lithotomy position is taken firstly, the patient is examined and evaluated by a conventional affected ureteroscope whether the affected ureter has the situations of stenosis, occupation and the like, particularly for the patient with the calculus of the upper ureter, the calculus at the upper end of the ureter can be pushed back into a renal pelvis under the ureteroscope so as to be removed together in a percutaneous nephroscope operation, and meanwhile, a zebra guide wire is reserved and a ureter catheter is reserved. After the successful catheterization, the patient takes the prone position or the lateral position, water is injected into the ureteral catheter which is placed into the patient to cause artificial hydronephrosis, a proper puncture cup is selected to puncture under the guidance of B-ultrasound, an operation channel sheath is established, holmium laser or ballistic lithotripsy is performed, and water is injected into the ureteral catheter which is placed into the patient in the operation to assist the crushed small stones to be discharged from the established renal channel.

The percutaneous nephrolithotomy needs to keep the ureteral catheter at the lithotomy position for water injection, and the ureteral catheter which is commonly used clinically at present needs to be injected with water through a connecting syringe. When the indwelling ureteral catheter is positioned at the external end of the body after success and needs water injection, the current common clinical method is that the tail end of the catheter is inserted into a syringe needle, water is injected through the syringe needle, and the self-inserted needle is easy to fall off, so that the water injection efficiency is poor.

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

For overcoming the above-mentioned defect of prior art, the utility model provides a ureteral catheter subassembly, including pipe and water injection connecting piece, the pipe includes guide-in end and water injection end, the water injection connecting piece have with the first pair of interface of the water injection end butt joint of pipe, and with the water injection interface of first pair of interface intercommunication. The water injection device is connected with the water injection interface of the water injection connecting piece, so that the ureteral catheter assembly and the water injection device can be conveniently connected, and the water injection efficiency is improved.

Means for solving the problems

According to a first aspect of embodiments of the present invention, there is provided a ureteral catheter assembly, comprising:

a conduit having a lead-in end and a water injection end; and

the water injection connecting piece is provided with a first pair of interfaces butted with the water injection end of the conduit, and a water injection interface communicated with the first pair of interfaces.

Optionally, the leading end of the catheter is provided with a threading hole.

Optionally, the catheter comprises a narrowing at the introduction end; the outer diameter of the convergent section decreases in a direction along which the catheter extends and is directed towards the introduction end.

Optionally, the catheter is provided with at least one water injection hole at a position close to the introduction end.

Optionally, the water filling interface of the water filling connection has an inner diameter larger than the inner diameter of the conduit.

Optionally, a mating thread is arranged at the water injection interface of the water injection connector.

Optionally, the outer surface of the catheter is provided with a plurality of length markers for marking the length of the length marker position from the introduction end of the catheter.

Optionally, the maximum distance of the length indicator mark is 30 cm.

Optionally, the length markings are annular graduations formed on the outer circumference of the catheter.

Optionally, the inner diameter of the conduit is 0.2-0.24 cm.

Effect of the utility model

The utility model provides a ureter catheter subassembly includes pipe and water injection connecting piece, the pipe includes the guide-in end and the end of watering, the water injection connecting piece have with the first pair of interface of the end butt joint of watering of pipe, and with the water injection interface of first pair of interface intercommunication. The water injection device is connected with the water injection interface of the water injection connecting piece, so that the ureteral catheter assembly and the water injection device can be conveniently connected, the water injection device can be effectively prevented from falling off, and the water injection efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a ureteral catheter assembly according to an embodiment of the present invention.

Description of the reference numerals

100. A ureteral catheter assembly; 110. a conduit; 111. a lead-in end; 112. a water injection end; 113. threading holes; 114. a water injection hole; 120. a water injection connecting piece; 121. a first pair of interfaces; 122. a water injection interface; 123. and (4) a contraction section.

Detailed Description

In order to make the technical solution and the advantages of the present invention more obvious and understandable, the following description is made in detail by way of exemplifying specific embodiments. Wherein the figures are not necessarily to scale, and certain features may be exaggerated or minimized to more clearly show details of the features; unless defined otherwise, technical and scientific terms used herein have the same meaning as those in the technical field to which this application belongs.

In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of simplifying the description of the present invention, but do not indicate that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

In the present invention, the terms "first" and "second" are used for descriptive clarity only and are not to be construed as relative importance of the indicated features or number of the indicated technical features. Thus, a feature defined as "first" or "second" may expressly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc.; "several" means at least one, e.g., one, two, three, etc.; unless explicitly defined otherwise.

In the present invention, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly unless expressly limited otherwise. For example, "connected," may be fixedly connected, or detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the interconnection of two elements or through the interaction of two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly defined otherwise, the first feature may be "on", "above" and "above", "below", "beneath", "below" or "beneath" the second feature such that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the level of the first feature is higher than the level of the second feature. A first feature "under," "below," and "beneath" a second feature may be directly or obliquely under the first feature or may simply mean that the first feature is at a level less than the second feature.

An embodiment of the present invention provides a ureteral catheter assembly 100, as shown in fig. 1. Ureteral catheter assembly 100 includes a catheter 110 and a water injection connector 120. The conduit 110 includes a lead-in end 111 and a water injection end 112. The water filling connection 120 has a first pair of ports 121 interfacing with the water filling end 112 of the conduit 110, and a water filling port 122 communicating with the first pair of ports 121. Through above-mentioned structural design, through the outside water injection device of water injection connector's water injection interface connection, the water injection device includes but not limited to the syringe, has made things convenient for joining in marriage of ureter catheter subassembly and water injection device, has improved water injection efficiency.

It can be understood that the outer diameter of the conduit 110 of the ureteral assembly 100 is adapted to the human ureter to prevent fine debris generated during the operation from falling into the gap between the human ureter and the conduit 110, which may affect the effectiveness of the percutaneous nephrolithotripsy operation. The catheter 110 has a length of 70cm for male patients and 60cm for female patients. The outer casing 110 of different length and size is designed for male and female patients because the female urethra is about 15-20cm shorter than the male urethra. If male and female patients use the outer sleeve 110 with the length of 60cm, the female patient is proper, and the leaking part of the male patient is too short, so that the male patient is inconvenient to connect a water injection device such as an injector and the like to perform water injection operation on the patient; if both male and female patients have an outer casing 110 with a length of 70cm, the outer casing is suitable for male patients, but for female patients, the leaking part is too long and easy to be pulled, and potential safety hazards may exist.

The introduction end 111 of the guide tube 110 is provided with a threading hole 113. Through the arrangement of the wire-threading hole, the catheter 110 of the ureteral catheter assembly is threaded on the zebra guide wire, so that the ureteral catheter assembly can be conveniently put into the ureter along the zebra guide wire. It can be understood that the inner diameter of the catheter 110 of the ureteral catheter assembly 100 is adapted to the zebra guide wire, so that when the catheter 110 is introduced into the human ureter, the catheter 110 can be conveniently introduced into the human ureter along the zebra guide wire, the catheter 110 is prevented from being folded or twisted in the ureter during the introduction into the human ureter, the catheter 110 can be smoothly introduced into the human ureter, and the ureter assembly can be conveniently introduced into a proper position in the human ureter through the zebra guide wire.

Specifically, the catheter 110 of the ureteral catheter assembly 100 sheathed with the zebra guide wire is introduced into the human body along with the zebra guide wire, when the catheter 110 is introduced to the position where the catheter 110 is contacted with the renal pelvis, the zebra guide wire is drawn out of the ureter of the human body, the catheter 110 is kept in the ureter of the human body, at this time, the introduction end 111 is positioned in the position where the body is contacted with the renal pelvis, and the introduction end 111 is used as a water injection port of the catheter 110; the water injection end 112 is exposed outside the human body and is connected with an external water injection device through the water injection end 112, so that water is conveniently injected into the human body ureter through the outer sleeve 110, artificial hydronephrosis is produced, a renal pelvis orifice required by a percutaneous nephrolithotomy operation is conveniently found, a percutaneous nephrolithotomy operation channel is established, a puncture inlet is accurately found, and the success rate of the percutaneous nephrolithotomy operation is improved. During percutaneous nephrolithotomy, calculus in the lithotomy can be discharged through a percutaneous renal channel by injecting water through the built-in ureter catheter assembly, and the influence on operation effect caused by the fact that small calculus falls into a ureter of a human body in the lithotomy can be avoided to a certain extent. In addition, water can be injected through the wire penetrating hole.

The design of arranging the wire-threading hole 113 at the leading end of the catheter 110 of the ureteral assembly instead of adopting the design of leading front end closing avoids the operation of removing the closed end when the catheter 110 needs to penetrate into the zebra guide wire. In addition, this removal of the closed tip can result in a difference in the length indication of the outer surface of the catheter 110 from the actual one, such that the operator cannot accurately determine the length of the ureteral catheter assembly introduced into the body. In this embodiment, since the guide end of the catheter 110 of the ureteral assembly 100 is provided with the thread hole 113, and the zebra guide wire penetrates into the thread hole 113, the actual length of the ureteral assembly is not affected because the closed end does not need to be removed, so that the operation is convenient and the operation operator can accurately judge the length of the ureteral catheter assembly introduced into the human body.

Further, the catheter 110 of the ureteral catheter assembly comprises a narrowing 123 at the introduction end 111; the outer diameter of the constriction 123 decreases gradually along the extension of the conduit 110 and in the direction of the leading end 111. Through the structural design, the leading end 111 of the catheter 110 of the ureteral catheter assembly is relatively smooth, and in some embodiments, the leading end 111 of the catheter 110 is in a circular arc shape. The leading-in end 111 of the present invention is not limited to the circular arc shape, and may be designed into another shape according to specific needs, such as an elliptical arc shape. Through the design, the leading-in end 111 of the catheter 110 of the ureteral catheter assembly is relatively smooth, so that the ureteral catheter assembly 100 can be conveniently penetrated into a ureter of a human body, and discomfort can not be caused to a patient in the penetrating process.

In some embodiments, the catheter 110 of the ureteral catheter assembly is provided with at least one water injection hole 114 at a location proximal to the introduction end 111. In this embodiment, 8 water injection holes 114 are provided on the side wall of the conduit 110, and the 8 water injection holes 114 are symmetrically arranged on the side wall of the conduit 110. It should be noted that the number of the water injection holes 114 is not limited to 8, and one, two, three, four, etc. may be provided according to specific needs. The water injection efficiency is further improved by injecting water through the water injection hole 114 together with the wire penetration hole 113 of the guide pipe 110.

In some embodiments, the water filling interface 122 of the water filling connection 120 has an inner diameter greater than the inner diameter of the conduit 110. Through the structural design, when the water injection device is connected through the water injection connecting piece 1121, the ureteral catheter assembly is convenient to be matched and connected with an external water injection device such as an injector and the like, so that water is conveniently injected into a human ureter through the catheter 110 of the ureteral catheter assembly in a percutaneous nephrolithotomy operation, and artificial hydronephrosis is established to facilitate the establishment of a percutaneous nephrosis operation channel through B-ultrasonic puncture in the operation.

Specifically, the water injection connector 122 of the water injection connector 120 is provided with a matching thread, so that the conduit 110 is tightly connected with an external water injection device, the water injection device is better prevented from loosening, and the success rate of water injection is improved. Taking an injector as an example of the water injection device, the existing scalp acupuncture kit is used, the needle-carrying part is cut off, the hose is retained, and the hose is sleeved on the water injection interface 122 of the water injection connector 120 for water injection. The design can prevent the hands of medical staff from being punctured by the needle head in the operation, and the sleeve pipe is not easy to fall off and leak water, thereby improving the water injection efficiency. It should be noted that the water injection device of the present invention is not limited to a syringe.

In this embodiment, the outer surface of the catheter 110 of the ureteral catheter assembly is provided with a plurality of length markers for identifying the length of the length markers from the introduction end 111 of the catheter 110.

Specifically, in this embodiment, the maximum distance of the length mark is 30 cm. Since the length of the ureter of a human body is about 30cm, the length of the ureter catheter assembly 100 introduced into the human body needs to be about 30cm, and the length mark is long enough to meet the requirement of judging whether the length of the ureter catheter assembly entering the human body is proper or not. With the above-described structural design, it is convenient to observe the length of the main body of the ureteral catheter assembly 100 entering the ureter, so as to prevent the ureteral catheter assembly 100 from entering the human ureter too long, which causes a part of the ureteral catheter assembly 100 to fold or twist in the ureter, and even if the zebra guide wire is removed, a part of the catheter 110 may fold or twist in the ureter, which affects water injection.

Further, the length mark is an annular scale mark formed on the periphery of the catheter 110, so that the ureteroscope placed in the bladder of a human body can conveniently observe the length of the ureter entering the ureter of the ureter catheter assembly 100 in all directions, and transmit the observed data to a display device such as a display screen, and an operation operator can conveniently know the condition of the ureter catheter assembly introduced into the ureter.

The outer diameter of the catheter 110 of the ureteral assembly 100 currently has both 0.2cm and 0.24cm gauge. Therefore, the gap between the catheter 110 of the ureter catheter assembly and the ureter of a human body is as small as possible, when percutaneous nephrolithotripsy is carried out, calculi in the calculus smashing operation is discharged through a percutaneous kidney channel by the aid of water injected into the built-in ureter catheter assembly to assist in the calculus smashing operation, and small calculi in the calculus smashing operation are prevented from falling into the ureter of the human body to a certain extent to influence operation effects.

The using method comprises the following steps:

securing a zebra guidewire to the renal pelvis;

the ureteroscope is placed into the bladder; so as to conveniently observe the depth of the catheter 110 of the ureteral component entering the human ureter and the condition that the catheter 110 of the ureteral component is folded or twisted in the guiding process, and transmit the observation result to a display device such as a display screen;

the zebra guide wire passes through a wire threading hole of a catheter 110 of the ureter assembly, and the catheter 110 is guided into the ureter of the human body along the zebra guide wire;

when the length of the catheter 110 of the ureteral assembly entering the ureter of a human body reaches a length mark of 30cm, stopping introducing the ureteral catheter assembly into the ureter;

the zebra guide wire is pulled out of the ureteral assembly, then the zebra guide wire catheter 120 is pulled out of the human body, and the outer sleeve 110 is reserved at the position close to the renal pelvis in the ureteral;

an external water injection means, such as a syringe, is connected through the water injection connector 120 of the guide tube 110, and water is injected into the guide tube 110 through the water injection means to establish a surgical pathway.

The utility model provides a ureteral catheter subassembly 100, including pipe 110 and water injection connecting piece 120. The conduit 110 includes a lead-in end 111 and a water injection end 112. The water filling connection 120 has a first pair of ports 121 interfacing with the water filling end 112 of the conduit 110, and a water filling port 122 communicating with the first pair of ports 121. The water injection device is connected through the water injection interface of the water injection connecting piece, so that the ureteral catheter assembly and the water injection device can be conveniently connected, and the water injection efficiency is improved.

It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations encompassed by the claims. Various modifications and changes may also be made on the above embodiments without departing from the scope of the present disclosure. Likewise, various features of the above embodiments may be combined in any combination to form additional embodiments of the invention that may not be explicitly described. Therefore, the above embodiments only represent several embodiments of the present invention, and do not limit the protection scope of the present invention.

Claims

1. A ureteral catheter assembly, characterized in that the ureteral catheter assembly (100) comprises:

a conduit (110) having a lead-in end (111) and a water injection end (112); and

a water filling connection (120) having a first pair of ports (121) interfacing with the water filling end (112) of the conduit (110), and a water filling port (122) communicating with the first pair of ports (121).

2. The ureteral catheter assembly according to claim 1, wherein the introduction end (111) of the catheter (110) is provided with a threading hole (113).

3. The ureteral catheter assembly according to claim 2, wherein the catheter (110) comprises a constriction (123) at the introduction end (111); the outer diameter of the constriction (123) decreases gradually in the direction in which the guide tube (110) extends and is directed towards the introduction end (111).

4. The ureteral catheter assembly according to claim 1, wherein the catheter (110) is provided with at least one water injection hole (114) at a location proximal to the introduction end (111).

5. The ureteral catheter assembly according to claim 1, wherein an inner diameter of the water injection interface (122) of the water injection connector (120) is larger than an inner diameter of the catheter (110).

6. The ureteral catheter assembly according to claim 1, wherein mating threads are provided at the water injection interface (122) of the water injection connector (120).

7. The ureteral catheter assembly according to claim 1, wherein the outer surface of the catheter (110) is provided with a plurality of length markings for marking the length of the length markings located a distance from the introduction end (111) of the catheter (110).

8. The ureteral catheter assembly according to claim 7, wherein the length indicator mark has a maximum distance of 30 cm.

9. The ureteral catheter assembly according to claim 7 or 8, wherein the length markings are annular graduations formed on the outer circumference of the catheter (110).

10. The ureteral catheter assembly according to claim 1, wherein the inner diameter of the catheter (110) is 0.2-0.24 cm.