CN112618918A

CN112618918A - Ureter guide sheath

Info

Publication number: CN112618918A
Application number: CN202110140733.5A
Authority: CN
Inventors: 沈远军; 蒲良松
Original assignee: Shenzhen Maipuqi Medical Technology Co ltd
Current assignee: Shenzhen Maipuqi Medical Technology Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-04-09

Abstract

The invention relates to the technical field of medical supplies and discloses a ureteral guide sheath which comprises an inner tube, wherein a spring is sleeved on the surface of the inner tube, a first outer tube is sleeved on the surface of the spring, a second outer tube is sleeved on the surface of the spring and at one end of the first outer tube, a third outer tube is sleeved on the surface of the spring and at one end of the second outer tube, and the hardness of the first outer tube, the hardness of the second outer tube and the hardness of the third outer tube are respectively from high to low; the first outer pipe is matched with the second outer pipe, so that the patient can be greatly relieved from pain when the ureter is placed in a patient, corresponding elastic shaping can be carried out according to the cavity channel of the patient when the ureter is placed in the patient through the matching of the second outer pipe, the preset position can be easily and accurately entered in an operation, the operation is more flexible, the pushing performance of the first outer pipe can be ensured through the matching of the first outer pipe, and the practicability of the device is improved.

Description

Ureter guide sheath

Technical Field

The invention relates to the technical field of medical supplies, in particular to a ureter guide sheath.

Background

The ureteral guide sheath used in clinical practice at present has a tube body structure composed of PTFE, a stainless steel spring and Pebax, but all tube bodies have only one hardness, and the tube bodies are hard, and although the pushing capacity is better, the ureteral guide sheath has the following disadvantages: the pipe body is too hard, when being placed into the ureter of a patient, the pipe body can cause great pain to the patient, when being placed into the ureter of the patient, the pipe body is too hard, corresponding elastic shaping can not be carried out according to the cavity channel of the patient, the accurate entering of a preset position in an operation is difficult, and the operation is lack of flexibility. To solve the above problems, we provide a ureteral access sheath.

Disclosure of Invention

The invention aims to provide a ureteral guide sheath to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the ureteral guide sheath comprises an inner tube, wherein a spring is sleeved on the surface of the inner tube, a first outer tube is sleeved on the surface of the spring, a second outer tube is sleeved on the surface of the spring and at one end of the first outer tube, and a third outer tube is sleeved on the surface of the spring and at one end of the second outer tube.

Preferably, the hardness of the first outer pipe, the hardness of the second outer pipe and the hardness of the third outer pipe are respectively from high to low.

Preferably, one end of the inner tube is communicated with a sheath cup, and a sheath core is sleeved in the inner tube.

Preferably, one end of the sheath core is communicated with a connector assembly.

Preferably, one end of the sheath cup is bolted with a limiting sleeve, and the surface of the sheath core is sleeved with a limiting disc.

Compared with the prior art, the invention has the following beneficial effects:

the first outer pipe is matched with the second outer pipe, so that the patient can be greatly relieved from pain when the ureter is placed in a patient, corresponding elastic shaping can be carried out according to the cavity channel of the patient when the ureter is placed in the patient through the matching of the second outer pipe, the preset position can be easily and accurately entered in an operation, the operation is more flexible, the pushing performance of the first outer pipe can be ensured through the matching of the first outer pipe, and the practicability of the device is improved.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;

fig. 3 is a side sectional view of a portion of the structure of the present invention.

In the figure: 1. an inner tube; 2. a spring; 3. a first outer tube; 4. a second outer tube; 5. a third outer tube; 6. a sheath cup; 7. a sheath core; 8. a joint assembly; 9. a limiting sleeve; 10. a limiting disc.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a ureteral access sheath includes an inner tube 1, a spring 2 sleeved on a surface of the inner tube 1, a first outer tube 3 sleeved on a surface of the spring 2, a second outer tube 4 sleeved on a surface of the spring 2 and at an end of the first outer tube 3, and a third outer tube 5 sleeved on a surface of the spring 2 and at an end of the second outer tube 4.

Further, the hardness of the first outer tube 3, the second outer tube 4 and the third outer tube 5 is respectively from high to low, so that the operation is convenient and flexible.

Furthermore, one end of the inner tube 1 is communicated with a sheath cup 6, and a sheath core 7 is sleeved in the inner tube 1, so that the device can be effectively matched for use.

Furthermore, one end of the sheath core 7 is communicated with a joint component 8, so that the device is convenient to connect.

Furthermore, one end of the sheath cup 6 is bolted with a limiting sleeve 9, and the surface of the sheath core 7 is sleeved with a limiting disc 10, so that the sheath core 7 can be effectively limited and fixed.

The working principle is as follows: the device passes through the cooperation of third outer tube 5, when putting into patient ureter, can to a great extent reduce the misery to the patient, through the cooperation of second outer tube 4, when putting into patient ureter, can carry out corresponding elastic molding according to patient's chamber passageway, it is comparatively easy to get into the preset position in the operation accuracy, and the operation has more the flexibility, through the cooperation of first outer tube 3, can guarantee its propelling movement nature.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. A ureteral access sheath, comprising an inner tube (1), characterized in that: the surface of the inner pipe (1) is sleeved with a spring (2), the surface of the spring (2) is sleeved with a first outer pipe (3), the surface of the spring (2) is sleeved with a second outer pipe (4) at one end of the first outer pipe (3), and the surface of the spring (2) is sleeved with a third outer pipe (5) at one end of the second outer pipe (4).

2. A ureteral access sheath according to claim 1, wherein: the hardness of the first outer pipe (3), the hardness of the second outer pipe (4) and the hardness of the third outer pipe (5) are respectively from high to low.

3. A ureteral access sheath according to claim 1, wherein: one end of the inner tube (1) is communicated with a sheath cup (6), and a sheath core (7) is sleeved in the inner tube (1).

4. A ureteral access sheath according to claim 3, wherein: one end of the sheath core (7) is communicated with a joint component (8).

5. A ureteral access sheath according to claim 3, wherein: one end of the sheath cup (6) is bolted with a limiting sleeve (9), and the surface of the sheath core (7) is sleeved with a limiting disc (10).