TWM629477U - Ureteral stent assembly and pusher thereof - Google Patents

Abstract

The ureteral stent assembly includes a ureteral stent, a bladder end component, and a pusher. The ureteral stent includes a renal end and a ureteral end. The bladder end component is connected to the ureteral end of the ureteral stent with a tether. The pusher includes a push head located on the pusher. When the ureteral stent and the bladder end component are pushed into a predetermined position of the human body along the guidewire by the pusher, the guidewire passes through the ureteral stent, the bladder end component and the pusher, and the front end of the pusher is used to abut against the ureteral end of the ureteral stent. At the end of the ureter, the bladder end component is sleeved on the front section of the pusher, and the push head is used to push the bladder end component. When the renal end of the ureteral stent reaches the kidney, the guidewire and the pusher are sequentially removed from the human body, and the ureteral stent and the bladder component stay in the desired position.

Description

Ureteral catheter assembly and push rod tube thereof

The new model relates to a ureteral catheter assembly and its push rod tube.

The traditional ureteral catheter is a device installed in the human body to assist in the drainage of urine. By placing the two ends of the ureteral catheter in the renal pelvis and the bladder respectively, it can prevent or treat the obstruction of the ureter and ensure that the urine of the kidney can be drained to the bladder. Medical effects.

When one end of the front ureteral catheter is placed in the bladder, it often causes discomfort in the human bladder or frequent urination. In view of this, manufacturers of related medical devices or medical practitioners are eager to improve the design of ureteral catheters to benefit the population.

The new model proposes an innovative ureteral catheter assembly to solve the problems of the traditional ureteral catheter.

In some embodiments of the present invention, a push rod tube for pushing a ureteral catheter and a bladder end element connected to the ureteral catheter with a tether, the push rod tube comprising a push head, the The front end of the push rod tube is used to abut and push the ureteral end of the ureteral catheter, the bladder end element is sleeved on the front section of the push rod tube, and the size or shape of the push head is suitable for pushing the bladder end element.

In some embodiments of the present invention, the push head is located on the push rod tube in a fixed, movable or detachable manner.

In some embodiments of the present invention, a ureteral catheter assembly includes a ureteral catheter, a bladder end member, and a pushrod tube. The ureteral catheter includes a renal end and a ureteral end. The bladder end element is connected to the ureteral end of the ureteral catheter with a tether. The push rod tube includes a push head located on the push rod tube. When the ureteral catheter and the bladder end element are pushed into the predetermined position of the human body along a guide wire by the push rod tube, the guide wire passes through the ureteral catheter, the bladder end element and the push rod tube, and the front end of the push rod tube is used for abutting and The ureteral end of the ureteral catheter is pushed forward, the bladder end element is sleeved on the front section of the push rod tube, and the push head is used to push the bladder end element.

In some embodiments of the present invention, the bladder end element is used to suspend the urine of the human bladder.

In some embodiments of the present invention, the bladder end element is used as the clip end for removal of the ureteral catheter.

In some embodiments of the present invention, the push head is located in a partial section in the middle of the push rod tube.

In some embodiments of the present invention, the push head extends to cover the rest of the push rod tube except for the front section.

In some embodiments of the present invention, the bladder end element is linear in shape.

In some embodiments of the present invention, the bladder end member has a crimped shape.

In some embodiments of the present invention, the push head is located on the push rod tube in a fixed, movable or detachable manner.

To sum up, the ureteral catheter assembly of the present invention includes a ureteral catheter and a bladder end element. The length of the ureteral catheter is less than the length of the human ureter, so when the kidney end of the ureteral catheter is positioned in the human kidney, the ureteral end is still located in the human ureter. Therefore, the ureteral catheter does not become a source of bladder irritation. The material density of the bladder end element and the tie line is lower than that of water, so it can be suspended on the urine of the human bladder, and it is less likely to stimulate the bladder. The push rod tube is designed with a push head for pushing the ureteral catheter and the bladder end element, and can accurately push the ureteral catheter and the bladder end element to the predetermined position in the human body.

The above description will be described in detail in the following embodiments, and further explanations will be provided for the technical solution of the present invention.

In order to make the description of the present invention more detailed and complete, reference may be made to the accompanying drawings and the various embodiments described below. The same numbers in the drawings represent the same or similar elements. On the other hand, well-known elements and steps have not been described in the embodiments to avoid unnecessarily limiting the present invention.

In the embodiments and the scope of the patent application, unless there is a special limitation on the article in the context, "a" and "the" may refer to a single or plural.

Please refer to FIG. 1, which illustrates a ureteral catheter assembly according to some embodiments of the present invention. The ureteral catheter assembly 100 includes a ureteral catheter 122 , a bladder end member 124 and a pushrod tube 132 . The ureteral catheter 122 includes a kidney end 122a and a ureteral end 122b. The renal end 122a of the ureteral catheter 122 is used to be placed in the human kidney, and the ureteral end 122b of the ureteral catheter 122 is used to be placed in the human ureter, which is different from the current ureteral catheter. General usage. The bladder end element 124 is used to be placed in the human bladder, and is connected to the ureteral end 122b of the ureteral catheter 122 by a tether 126 . The push rod tube 132 is a tool for pushing the ureteral catheter 122 and the bladder end element 124 into a predetermined position of the human body. The push rod tube 132 has a front end 132a and a rear end 132b. The front end 132a of the push rod tube 132 is used for pushing against the ureteral catheter 122 , and the rear end 132b of the push rod tube 132 is used for the operator to push the ureteral catheter 122 with force. The push rod tube 132 also includes an annular push head 134 located near the front end 132a. The push rod tube 132 is divided into a front section 132c and a rear section 132d with the push head 134 as a segment point. In some embodiments of the present invention, the push head 134 can be located on the push rod tube 132 in a fixed, movable or detachable manner. In some embodiments of the present invention, the renal end 122a of the ureteral catheter 122 has a crimped shape so that it can be positioned in the kidneys of the human body. The renal end 122a of the ureteral catheter 122 has appropriate elasticity, and when a relatively rigid guide wire is passed therethrough, the renal end 122a will be straight to facilitate delivery into the kidney of the human body during surgery. In some embodiments of the present invention, the size of the bladder end element 124 is larger than the inner diameter of the human ureter, the material density of the bladder end element 124 is less than 1 gram per cubic centimeter, and is made of a material that does not irritate the human bladder. In some embodiments of the present invention, the material density of the tether 126 connecting the bladder end element 124 and the ureteral catheter 122 may also be less than 1 gram per cubic centimeter. In some embodiments of the present invention, the bladder end member 124 has a linear shape or a straight tube shape.

Please also refer to FIGS. 2-5 , which illustrate the steps of pushing the ureteral catheter assembly into the body according to some embodiments of the present invention. In the step of Fig. 2, a schematic diagram of a human body part is shown. Before the ureteral catheter assembly is placed into the body, a guide wire 110 with appropriate rigidity and elasticity is placed into the body. The rear end 110b of the wire 110 is placed outside the body as the penetrating end of the ureteral catheter assembly, for the ureteral catheter assembly to be pushed into a predetermined position of the human body along the guide wire 110 .

In the step of FIG. 3 (please refer to FIG. 1 at the same time), the rear end 110b of the guide wire 110 is firstly inserted into the ureteral catheter 122 (hollow tube), and the guide wire 110 is fed from the renal end 122a of the ureteral catheter 122 to the ureteral catheter 122 . The ureteral end 122b of the catheter 122 exits. Next, the bladder end element 124 is put on its front section 132c from the front end 132a of the push rod tube 132, and the rear end 110b of the guide wire 110 is passed through the push rod tube 132 (hollow tube). The front end 132a is put in and pulled out from the rear end 132b of the push rod tube 132 . The operator exerts force on the rear end 132b of the push rod tube 132, so that the front end 132a of the push rod tube 132 abuts the ureteral end 122b of the ureteral catheter 122, and pushes the ureteral catheter 122 along the guide wire 110 into the body.

In the step of FIG. 4 , under the pushing of the push rod tube 132 by the force of the operator, the ureteral catheter 122 passes through the urethra 148 and the bladder 146 along the guide wire 110 to reach the ureter 144 , and the bladder end element 124 also moves toward the ureter 144 synchronously. Bladder 146 is advanced.

In the step of Fig. 5, under the force of the operator, the kidney end 122a of the ureteral catheter 122 reaches the predetermined position in the kidney 142, the ureteral end 122b of the ureteral catheter 122 reaches the predetermined position in the ureter 144, and the bladder end The element 124 then reaches a predetermined location within the bladder 146 . After removal of the guide wire 110, the renal end 122a of the ureteral catheter 122 returns from a straight shape to its original crimped shape, the size of the crimped shape being larger than the inner diameter of the ureter 144, so that the renal end 122a can be positioned within the kidney 142 without slipping off to the ureter 144. Because the size of the bladder end element 124 is larger than the inner diameter of the ureter 144, the bladder end element 124 cannot enter the ureter 144 during the pushing process. Since the material density of the bladder end element 124 and the tether 126 is less than the density of water (ie, 1 gram per cubic centimeter), when the bladder 146 accumulates urine, the bladder end element 124 and the tether 126 will be suspended in the urine in the bladder 146 . It is less likely to directly stimulate the inner wall of the bladder 146 to avoid discomfort or frequent urination. After the medical assistance task of the ureteral catheter 122 is completed, when the ureteral catheter 122 is to be removed, the bladder end element 124 can be applied during the operation to pull the ureteral catheter 122 out of the kidney 142 and the ureter 144 together to be removed from the body. The ureteral catheter 122 of this component has no bladder end design, which will not irritate the inner wall of the bladder, and is connected to the bladder end element 124 with a tether 126, and the bladder end element 124 serves as the clip end for removing the ureteral catheter 122.

Please refer to FIG. 6 , which shows a cross-sectional view along section line 6 - 6 of FIG. 3 . In some embodiments of the present invention, the inner diameter D1 of the ureteral catheter 122 is greater than the outer diameter D2 (about 0.88 mm) of the guide wire 110 , so the guide wire 110 can pass through the ureteral catheter 122 . In some embodiments of the present invention, the inner diameter D4 of the push rod tube 132 is larger than the outer diameter D2 of the guide wire 110 , so the guide wire 110 can pass through the push rod tube 132 . In some embodiments of the present invention, the outer diameter D5 of the front section 132c of the push rod tube 132 should be larger than the inner diameter D1 of the ureteral catheter 122 , and the inner diameter D4 of the front section 132c of the push rod tube 132 should be smaller than the outer diameter of the ureteral catheter 122 D7, so the push rod tube 132 can push the ureteral catheter 122. In some embodiments of the present invention, the inner diameter D3 of the bladder end member 124 is larger than the outer diameter D5 of the front section 132c of the push rod tube 132 , so the bladder end member 124 can slide on the front section 132c of the push rod tube 132 . In some embodiments of the present invention, the outer diameter D6 of the pusher head 134 is larger than the inner diameter D3 of the bladder end element 124 , so the pusher head 134 can push the bladder end element 124 to slide along the guide wire 110 .

Please refer to FIG. 7, which shows a push rod tube according to another embodiment of the present invention. In some embodiments of the present invention, the pushrod tube 132' differs from the aforementioned pushrod tube 132 primarily in the size or the area covered by its pusher head 134'. Unlike the pusher head 134 which is only located in a partial section in the middle of the pushrod tube, the pusher head 134' extends to cover the entire rear section 132d of the pushrod tube 132'. In other words, the push head 134' extends to cover the rest of the push rod tube 132' except for the front section 132c.

Please refer to FIG. 8, which shows a push rod tube according to another embodiment of the present invention. In some embodiments of the present invention, the push rod tube 132" differs from the aforementioned push rod tube 132 primarily in its push head 134". In some embodiments of the present invention, the pusher head can be of any shape different from the pusher head 134 or the pusher head 134', for example, the pusher head 134" only needs to be able to push the above-mentioned bladder end element 124, and No special shape is required.

Please refer to FIG. 9, which illustrates a ureteral catheter and a bladder end element according to another embodiment of the present invention. Different from the aforementioned straight shape or straight tube shape of the bladder end member 124, the bladder end member 124' of this embodiment has a curled shape or a curled tube shape, so that it can be positioned in the human bladder without easily entering the human ureter. Similar to the characteristics of the kidney end 122a of the aforementioned ureteral catheter 122, the bladder end member 124' has a suitable elasticity, and when a relatively rigid guide wire is passed through it, the bladder end member 124' will be straight to facilitate delivery into the body during surgery in the bladder. When the guidewire is removed, the bladder end element 124' returns to its crimped shape, which does not readily enter the body's ureter. The crimped shape of the bladder end member 124' is also easy for the operator to grasp during surgery and remove the ureteral catheter 122 from the kidney 142 together with the ureter 144 out of the body.

The new ureteral catheter assembly includes a ureteral catheter and a bladder end element. The length of the ureteral catheter is less than the length of the human ureter, so when the kidney end of the ureteral catheter is positioned in the human kidney, the ureteral end is still located in the human ureter. Therefore, the ureteral catheter does not become a source of bladder irritation. The material density of the bladder end element and the tie line is lower than that of water, so it can be suspended on the urine of the human bladder, and it is less likely to stimulate the bladder. The push rod tube is designed with a push head for pushing the ureteral catheter and the bladder end element, and can accurately push the ureteral catheter and the bladder end element to the predetermined position in the human body.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be determined by the scope of the appended patent application.

In order to make the above-mentioned and other objects, features, advantages and embodiments of the present invention more clearly understood, the descriptions of the appended symbols are as follows: 100: Ureteral catheter assembly 110: Guide wire 110a: Front End 110b: Backend 122: Ureteral catheter 122a: kidney end 122b: Ureteral end 124: Bladder end element 124': Bladder end element 126: Tether 132: Push rod tube 132': push rod tube 132": Push Rod Tube 132a: Front end 132b: Backend 132c: The first paragraph 132d: back paragraph 134: push head 134': push head 134": push head 142: Kidneys 144: Ureter 146: Bladder 148: Urethra D1: inner diameter D2: outer diameter D3: inner diameter D4: inner diameter D5: outer diameter D6: outer diameter D7: outer diameter

In order to make the above-mentioned and other objects, features, advantages and embodiments of the present invention more clearly understood, the accompanying drawings are described as follows: FIG. 1 illustrates a ureteral catheter assembly according to an embodiment of the present invention; FIGS. 2-5 illustrate the steps of pushing the ureteral catheter assembly into the body according to some embodiments of the present invention; Fig. 6 is a cross-sectional view along section line 6-6 of Fig. 3; FIG. 7 shows a push rod tube according to another embodiment of the present invention; Figure 8 illustrates a push rod tube according to yet another embodiment of the present invention; and FIG. 9 shows a ureteral catheter according to another embodiment of the present invention.

100: Ureteral catheter assembly

122: Ureteral catheter

122a: kidney end

122b: Ureteral end

124: Bladder end element

126: Tether

132: Push rod tube

132a: Front end

132b: Backend

134: push head

132c: The first paragraph

132d: back paragraph

Claims (10)

A push rod tube for pushing a ureteral catheter and a bladder end element connected to the ureteral catheter with a tether, the push rod tube comprising a push head, the front end of the push rod tube for abutting and push the ureteral end of the ureteral catheter, the bladder end element is sleeved on the front section of the push rod tube, and the size or shape of the pusher is suitable for pushing the bladder end element. The push rod tube of claim 1, wherein the push head is located on the push rod tube in a fixed, movable or detachable manner. A ureteral catheter assembly, comprising: a ureteral catheter comprising a kidney end and a ureteral end; a bladder end element connected to the ureteral end with a tether; and a push rod tube comprising a pusher head positioned on the push rod tube When the ureteral catheter and the bladder end element are pushed into a predetermined position of the human body along a guide wire by the push rod tube, the guide wire passes through the ureteral catheter, the bladder end element and the push rod tube, and the The front end of the push rod tube is used to abut and push the ureteral end of the ureteral catheter, the bladder end element is sleeved on the front section of the push rod tube, and the push head is used to push the bladder end element. The ureteral catheter assembly of claim 3, wherein the bladder end member is used to suspend urine in the human bladder. The ureteral catheter assembly of claim 3, wherein the bladder end member serves as a gripping end for removing the ureteral catheter. The ureteral catheter assembly of claim 3, wherein the pusher head is located in a partial section in the middle of the pusher tube. The ureteral catheter assembly of claim 3, wherein the pusher extends over the rest of the pusher tube except the front section. The ureteral catheter assembly of claim 3, wherein the bladder end member is rectilinear in shape. The ureteral catheter assembly of claim 3, wherein the bladder end member is in a crimped shape. The ureteral catheter assembly of claim 3, wherein the pusher is located on the pusher tube in a fixed, movable or detachable manner.

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