CN109223063B

CN109223063B - Urinary catheter guide sheath

Info

Publication number: CN109223063B
Application number: CN201811329400.1A
Authority: CN
Inventors: 汤庆峰
Original assignee: Chengdu Xindu Peoples Hospital
Current assignee: Chengdu Xindu Peoples Hospital
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2020-09-01
Anticipated expiration: 2038-11-09
Also published as: CN109223063A

Abstract

The invention discloses a urinary catheter guide sheath, which comprises a guide sheath and a fixing device, wherein the guide sheath is arranged on the front end of the guide sheath; one end of the guide sheath is movably provided with an expansion tube, and the other end of the guide sheath is embedded into the drainage tube; one end of the drainage tube facing the guide sheath is provided with a first tube wall and a second tube wall with gaps; the first pipe wall and the second pipe wall are respectively connected with the fixing device; the fixing device comprises moving parts positioned on two sides of the first pipe wall and the second pipe wall; the movable piece comprises a movable rod, a first gear and a second gear which are meshed with each other; a tooth groove meshed with the first gear is formed in the movable rod; one end of the second gear, which is far away from the first gear, is provided with a transmission rod; the transmission rod is respectively connected with the first pipe wall and the second pipe wall. This device can be independent carry out different drainage operations to the patient, and can not mutual interference between each drainage operation.

Description

Urinary catheter guide sheath

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a flexible catheter introducer sheath for urination.

Background

Ureteroscope calculus removing is that a ureteroscope enters a ureter from a urethra through a bladder, then calculus is removed by using a stone-covering basket or a calculus removing forceps, or accurate calculus is removed under the guide of the ureteroscope by using a pneumatic ballistic calculus remover, a laser calculus remover, an ultrasonic ballistic calculus removing device and other calculus removing devices under the ureteroscope, and the calculus is removed after being crushed.

The common ureteroscope is divided into a hard ureteroscope and a soft ureteroscope, and the soft ureteroscope can reach the upper section of a ureter and even a kidney in an operation to treat calculus of the upper section of a urinary system without operation. A hard ureteroscope is used for treating calculus in the middle and lower segments of ureter. The operation is simple and convenient, the safety is realized, the wound is avoided, the pain of the patient can be greatly relieved, the occurrence of complications is reduced, and the stone removal is thorough.

In the ureteroscope calculus removing operation, the ureteroscope must be matched with a ureter guide sheath for use. The ureteral guide sheath firstly enters the body of a patient in the ureteroscope lithotomy, and is directly introduced into the accessory of a focus part under X-ray development, thereby providing great convenience for the subsequent entering of an endoscope. In addition, after the calculus removing operation is finished, the guiding sheath tube can be used as a channel for the outflow of the calculus directly out of the human body, so that the pain of a patient is greatly reduced, and the occurrence of complications is also reduced.

However, the existing ureteral guide sheath inner tube only has a single channel, and can not independently or simultaneously perform various operations, and meanwhile, the existing ureteral guide sheath is mostly disposable articles and does not have an effective drainage structure.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a urinary hose guide sheath which can effectively solve the problem that the existing urinary hose guide sheath does not have a drainage structure.

In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows:

a urinary catheter introducer sheath comprises an introducer sheath and a fixing device; one end of the guide sheath is movably provided with an expansion tube, and the other end of the guide sheath is embedded into the drainage tube; one end of the drainage tube facing the guide sheath is provided with a first tube wall and a second tube wall with gaps; the first pipe wall and the second pipe wall are respectively connected with the fixing device;

the fixing device comprises moving parts positioned on two sides of the first pipe wall and the second pipe wall; the movable piece comprises a movable rod, a first gear and a second gear which are meshed with each other; a tooth groove meshed with the first gear is formed in the movable rod; one end of the second gear, which is far away from the first gear, is provided with a transmission rod; the transmission rod is respectively connected with the first pipe wall and the second pipe wall.

Further, the fixing device further comprises a housing; the moving part is arranged in the shell.

Furthermore, a button connected with the movable rod is arranged on the outer wall of the shell.

Furthermore, three mutually independent through holes are arranged in the guide sheath.

Furthermore, one end of the drainage tube is provided with a first tube wall and a second tube wall which have gaps, the other end of the drainage tube is of an integral structure, and drainage inner tubes which are respectively communicated with the through holes are arranged in the drainage tube.

Furthermore, a convex block is arranged on the outer wall of one end of the guide sheath adjacent to the drainage tube; the inner walls of the first pipe wall and the second pipe wall are provided with grooves for the lugs to be embedded in.

Furthermore, the outer wall of the guide sheath is provided with scale marks.

The invention has the beneficial effects that:

1. through set up the drainage tube in the one end at the uide sheath, can be effectual with the internal various liquid drainage of patient to external, simultaneously, set up the drainage inner tube that is linked together with the through-hole in the drainage tube, can make each through-hole and drainage inner tube all independently operate to only carry out same operation.

2. Through the cooperation of moving part, first pipe wall, second pipe wall, recess and lug, can effectually install uide sheath and drainage tube and fixing device fast to can guarantee the stability of being connected between uide sheath and the drainage tube.

Drawings

FIG. 1 is a schematic structural view of the apparatus;

FIG. 2 is a schematic view of the connection of the movable member;

FIG. 3 is a top view of the introducer sheath;

wherein, 1, a guide sheath; 2. an expansion tube; 3. a fixing device; 4. a housing; 5. a drainage tube; 6. a first tube wall; 7. a second tube wall; 8. a movable rod; 9. a tooth socket; 10. a first gear; 11. a second gear; 12. a transmission rod; 13. a groove; 14. a bump; 15. a through hole; 16. a button; 17. a drainage inner tube; 18. scale lines are marked.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.

Examples

As shown in figure 1, the urinary hose introducer sheath comprises an introducer sheath 1, and in order to accurately obtain the length of the introducer sheath 1 entering the body of a patient, scale marks 18 are arranged on the surface of the introducer sheath 1.

As shown in fig. 1, one end of the introducer sheath 1 is connected with the dilating tube 2 by screw threads, and the other end is embedded in the fixing device 3 and communicated with the drainage tube 5.

As shown in fig. 1 and 2, the fixing device 3 comprises a housing 4, a channel for passing the introducer sheath 1 is formed on the housing 4, and the introducer sheath 1 passes through one end of the housing 4 and can be inserted into a drainage tube 5 positioned between the housing 4 and the introducer sheath 1.

As shown in fig. 2, one end of the drainage tube 5 faces the guide sheath 1, and comprises a first tube wall 6 and a second tube wall 7 with gaps, and the other end is of an integral structure and is provided with a plurality of independent drainage inner tubes 17; and the ends of the first pipe wall 6 and the second pipe wall 7 are made of materials with certain toughness, and both can move along with the moving part in the fixing device 3 to generate certain deformation.

As shown in fig. 2, the movable member includes a movable rod 8 that is capable of freely sliding within the housing 4, one end of the movable rod 8 extends outside the housing 4, and a button 16 connected to the movable rod is provided outside the housing 4, whereby the movable rod 8 can be pushed by the button 16.

As shown in fig. 2, a plurality of tooth spaces 9 are provided on the movable rod 8, and a first gear 10 and a second gear 11 are provided to be engaged with each other, and the first gear 10 is engaged with the tooth spaces 9, and the second gear 11 is not in contact with the tooth spaces 9, so that the movable rod 8 is moved in a direction toward the introducer sheath 1 by pressing the button 16, and the first gear 10 and the second gear 11 are rotated.

As shown in fig. 2, a transmission rod 12 is fixed on a side of the second gear 11 away from the first gear 10, and one end of the transmission rod 12 away from the second gear 11 is connected to the first tube wall 6 or the second tube wall 7, so that the first tube wall 6 or the second tube wall 7 can be driven to deform a certain amount along a direction away from the guide sheath 1, so that the guide sheath 1 can be embedded into the drainage tube 5.

As shown in FIG. 2, in order to ensure the connection stability of the introducer sheath 1 and the drainage tube 5, grooves 13 are formed on the inner walls of the first tube wall 6 and the second tube wall 7, and meanwhile, a bump 14 is arranged on the outer wall of the introducer sheath 1, so that the bump 14 can be well embedded into the groove 13, and the connection stability of the introducer sheath 1 and the drainage tube 5 is ensured.

As shown in FIG. 2, to ensure that the introducer sheath 1 can be well connected to the drainage tube 5, it is preferable that the inner diameter of the drainage tube 5 is smaller than the outer diameter of the introducer sheath 1 and larger than the inner diameter of the introducer sheath 1, so that when the introducer sheath 1 is inserted into the drainage tube 5, the first tube wall 6 and the second tube wall 7 will move in the direction toward the introducer sheath 1 under the action of their own flexibility and drive the movable rod 8 to reposition.

As shown in figure 3, three mutually independent through holes 15 are arranged in the guide sheath 1 and communicated with the drainage inner tube 17 in the drainage tube 5, so that different modes of operation can be carried out on a patient through different through holes 15, multiple operations in the same through hole 15 pipeline are avoided, and the independence of each operation is ensured.

Claims

1. A urinary catheter introducer sheath is characterized by comprising an introducer sheath and a fixing device; one end of the guide sheath is movably provided with an expansion tube, and the other end of the guide sheath is embedded into the drainage tube; one end of the drainage tube facing the guide sheath is provided with a first tube wall and a second tube wall which have a gap; the first pipe wall and the second pipe wall are respectively connected with a fixing device; a convex block is arranged on the outer wall of one end of the guide sheath adjacent to the drainage tube; grooves for embedding the convex blocks are formed in the inner walls of the first pipe wall and the second pipe wall;

the fixing device comprises moving parts positioned on two sides of the first pipe wall and the second pipe wall; the movable piece comprises a movable rod, a first gear and a second gear which are meshed with each other; a tooth groove meshed with the first gear is formed in the movable rod; a transmission rod is arranged at one end of the second gear, which is far away from the first gear; the transmission rod is respectively connected with the first pipe wall and the second pipe wall.

2. The ureteral introducer sheath of claim 1, wherein the securing means further comprises a housing; the moving part is arranged in the shell.

3. The urinary hose introducer sheath of claim 2, wherein the housing has a button on an outer wall thereof for engaging a movable rod.

4. The urinary catheter introducer sheath according to claim 2, wherein three independent through holes are provided in the introducer sheath.

5. The urinary catheter introducer sheath according to claim 4, wherein the drainage tube has a first wall and a second wall with a gap at one end, and an integral structure at the other end, and drainage tubes respectively communicating with the through holes are provided therein.

6. The urinary catheter introducer sheath according to claim 1, wherein the outer wall of the introducer sheath is provided with graduations.