CN210842967U

CN210842967U - Adjustable air bag type flexible ureteroscope guide sheath

Info

Publication number: CN210842967U
Application number: CN201921298704.6U
Authority: CN
Inventors: 朱雨沫; 宋峥
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-06-26
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses an adjustable air bag type ureteroscope guide sheath, which comprises an air bag sheath, a guide wire, an air duct and a miniature constant pressure inflator pump; the air bag sheath consists of an outer layer and an inner layer, a closed gap is formed between the outer layer and the inner layer, and the closed gap is communicated with the air guide pipe; the air bag sheath is made of rubber materials and can expand or contract along with inflation or deflation; the inner layer is provided with an inner cavity with two open ends; the guide wire with a soft front end is arranged in the inner cavity, both ends of the guide wire extend out of the inner cavity, and the front end of the guide wire is provided with a fixed point of the air bag sheath; the tail end of the air duct is provided with a miniature constant-pressure inflator pump. The utility model discloses can get into ureter with little volume (with the nearly size of seal wire commonly used) under the non-inflation state in, can fully expand the ureter again after aerifing, make safe operation space, solve ureter guide sheath and put into difficult problem at one stage, improve and put the sheath success rate, reduce the ureter guide sheath simultaneously and put into the in-process to the damage of ureter, still can reach the effect of expansion ureter narrow department.

Description

Adjustable air bag type flexible ureteroscope guide sheath

Technical Field

The utility model relates to a guide sheath specifically is an air bag formula ureteroscope guide sheath can be regulated and control belongs to ureteroscope lithotripsy operation application technical field.

Background

With the continuous development of endoscope technology, ureter soft lens calculus is gradually becoming the first choice treatment mode of kidney stone, ureter upper segment calculus.

Clinically, however, we find that the success rate of the ureteral access sheath is low in the first stage, and the reason may be related to the ureteral stenosis of the patient or the factors of the hard material and the wide diameter of the existing ureteral access sheath; however, most of the patients can pass through the ureteroscope or the standard ureteroscope smoothly, which indicates that the ureteroscope conditions are still acceptable; when a patient with difficulty in inserting a ureteral introducer sheath in the first stage is clinically encountered, an operator usually selects to firstly leave a ureteral stent (F6 double J catheter) to expand the ureter, and then return to the hospital to draw the catheter, place the sheath and carry out further lithotripsy treatment after half a month or a month, so that the number of hospitalization operations is obviously increased, and the medical cost is increased; in addition, the ureteral access sheath is hard in material and fixed in diameter, so that the ureteral access sheath often causes damage to different degrees in the implantation process, and even may cause ureteral avulsion injury and ureteral fracture, and the risk of ureteral stenosis is increased in the long term. Therefore, the adjustable and controllable air bag type ureteroscope guide sheath is provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a success rate is lower for ureter guide sheath puts into among the solution prior art to and cause the defect of different degree ureter damage easily, the utility model provides a can regulate and control gasbag formula ureteroscope guide sheath.

An adjustable air bag type ureteroscope guide sheath comprises an air bag sheath, a guide wire, an air duct and a miniature constant-pressure inflator pump;

the air bag sheath is made of rubber materials and can expand or contract along with inflation or deflation; the guide wire with soft front end is arranged in the inner cavity formed by the inner layer, both ends of the guide wire extend out of the inner cavity, and the front end of the guide wire is fixed on the air bag sheath; the tail end of the air duct is provided with a miniature constant-pressure inflator pump.

Furthermore, the diameter of the inner cavity is expanded to 0.5-0.8 cm after inflation, and the inner layer is attached to the guide wire after deflation.

Further, the outer layer is made of elastic rubber materials, the inner layer is made of non-elastic rubber, and a closed gap of 0.09-0.11 cm is formed between the inner layer and the outer layer after inflation. The outer layer has elasticity, and when the outer layer is not inflated, the outer layer shrinks and comprises the inner layer which is attached to the guide wire, so that the shape of the next small volume can be maintained when the outer layer is not inflated, and the outer layer can be expanded and separated from the inner layer after being inflated; and the inner layer has no elasticity, so that the inner cavity can be ensured to have a stable shape and diameter.

Furthermore, the cross section of the closed gap formed between the inner layer and the outer layer is of a circular ring structure, and a plurality of drawing wires which are equal in length and are arranged at equal intervals are arranged between the inner layer and the outer layer. The traction wire plays a role in stabilizing the shape of the balloon sheath when being inflated, so that the balloon sheath is in a hollow tubular structure with the same diameter in an inflated state.

Furthermore, the air duct is fixed in the outer one end of keeping away from the seal wire front end, install the constant pressure valve on the air duct.

Further, the length of the male balloon sheath is 450mm +/-50 mm, and the length of the female balloon sheath is 350mm +/-30 mm.

Further, a paraffin coating is arranged on the outer side surface of the outer layer and is uniformly attached to the surface of the outer layer.

Furthermore, the front end of the guide wire is made of soft silica gel materials.

Furthermore, the miniature constant-pressure inflator pump can enable the air bag sheath to be inflated and expanded uniformly, and meanwhile, the inner diameter of the air bag sheath can be adjusted by controlling pressure according to operation requirements.

Furthermore, a bayonet capable of fixing the inner layer is arranged at the front end of the guide wire, the inner layer can be separated from the bayonet after inflation, and the air bag sheath and the guide wire can be fixed or separated by the bayonet.

The utility model has the advantages that:

1. the adjustable and controllable air bag type ureteroscope guide sheath is simple in structure and novel in design, can enter a ureter in a small size (almost the same as a common guide wire) in a non-inflation state, can fully expand the ureter after inflation, can be used for manufacturing a safe operation space, solves the problem of difficulty in one-stage placement of the ureteroscope guide sheath, improves the sheath placement success rate, simultaneously reduces the damage to the ureter in the ureter guide sheath placement process, can achieve the effect of expanding the narrow part of the ureter, and the like, and achieves multiple purposes.

2. When the ureteral balloon sheath is used, the ureteral balloon sheath can be directly taken out on the basis of fully expanding a part of small ureteral calculus, and meanwhile, the ureteral balloon sheath can play a role in fully expanding a narrow section of the ureter and the whole ureter, so that the ureteral balloon sheath is low in production cost, simple in structure, high in practical value and suitable for popularization and use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

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

FIG. 2 is a schematic view of the whole structure of the utility model before inflation;

FIG. 3 is a schematic view of the overall front cross-sectional structure of the present invention;

fig. 4 is a schematic diagram of the right side section structure of the balloon sheath of the present invention.

In the figure: 1. the device comprises a balloon sheath, 101, an outer layer, 102, an inner layer, 2, a closed gap, 3, a traction wire, 4, a guide wire, 5, a paraffin coating, 6, an air duct, 7, a constant pressure valve, 8, a miniature constant pressure inflator pump, 9 and an inner cavity; 11. and (4) a bayonet.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-3, an adjustable air bag type ureteroscope introducer sheath includes an air bag sheath 1, a guide wire 4, an air duct 6 and a micro constant pressure inflator 8; the air bag sheath 1 consists of an outer layer 1 and an inner layer 102, a closed gap 2 is formed between the outer layer 101 and the inner layer 102, and the closed gap 2 is communicated with the air duct 6; the air bag sheath 1 is made of rubber materials and can expand or contract along with inflation or deflation; the inner layer 102 forms an inner cavity 9 with two open ends; the guide wire 4 with a soft front end is arranged in the inner cavity 9, two ends of the guide wire extend out of the inner cavity, and the front end of the guide wire 4 is provided with a bayonet 11 fixed by the air bag sheath 1; the tail end of the air duct 6 is provided with a miniature constant pressure inflator pump 8. The diameter of the inner cavity 9 is expanded to 0.5-0.8 cm after inflation, and the inner layer is attached to the guide wire 4 after deflation.

The outer layer 101 is made of elastic rubber materials, the inner layer 102 is made of non-elastic rubber, and a closed gap of 0.09-0.11 cm is formed between the inner layer 102 and the outer layer 101 after the air inflation. The cross section of the closed gap formed between the inner layer 102 and the outer layer 101 is of a circular ring structure, and a plurality of drawing wires 3 which are equal in length and are arranged at equal intervals are arranged between the inner layer 102 and the outer layer 101.

The air duct 6 is fixed on the outer layer 101 at one end far away from the front end of the guide wire 4, and a constant pressure valve 7 is installed on the air duct 6. The length of the male air bag sheath 1 is 450mm +/-50 mm, and the length of the female air bag sheath 1 is 350mm +/-30 mm.

The outer surface of the outer layer 101 is provided with a paraffin coating 5, and the paraffin coating 5 is uniformly attached to the surface of the outer layer 101. The front end of the guide wire 4 is made of soft silica gel material.

The miniature constant-pressure inflator pump 8 can enable the air bag sheath 1 to be inflated and expanded uniformly, and meanwhile, the inner diameter of the inner cavity of the air bag sheath 1 can be adjusted by controlling pressure according to operation requirements.

When the utility model is used, the electric elements appearing in the application are externally connected with a power supply and a control switch when in use, the front end of the guide wire 4 is made of elastic silica gel materials, before inflation, the air bag sheath 1 is closely attached to the surface of the guide wire 4, the front end of the guide wire 4 is fixed on the air bag sheath 1 through the bayonet 11, the air bag sheath 1 is arranged at the proper position of the ureter along with the guide wire 4 under the direct vision of the ureteroscope, simultaneously, the surface of the outer layer 101 is provided with the paraffin coating 5 for lubrication, under the non-inflation state, the outer layer 101 retracts, the inner layer 102 is wrapped and tightly fixed on the guide wire 4, under the state, the ureter can guide the air bag sheath 1 to be arranged at the proper position in the ureter along with the direct vision of the ureteroscope, after the micro constant pressure inflator pump 8 is started to inflate, the inner layer 102 is gradually separated from the outer layer 101, after reaching a certain pressure, the inner layer 102 is, through the arranged traction wire 3, the distance between the inner layer and the outer layer is fixed during inflation, the cylindrical shape is kept, meanwhile, the air bag sheath 1 is integrally expanded, the inner layer 102 is separated from the guide wire 4, and then the guide wire 4 is withdrawn.

The micro constant-pressure inflator pump 8 can uniformly inflate and expand the ureteral air bag sheath under constant pressure, and the model is not limited. For example, a miniature inflator pump of model XG-668A and its associated power supply and circuitry may be used.

It is well within the skill of those in the art to implement, without undue experimentation, the present invention does not relate to software and process improvements, as related to circuits and electronic components and modules.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a can regulate and control gasbag formula soft ureteroscope guide sheath which characterized in that: comprises a balloon sheath (1), a guide wire (4), an air duct (6) and a micro constant pressure inflator pump (8);

the air bag sheath (1) is composed of an outer layer (101) and an inner layer (102), a closed gap (2) is formed between the outer layer (101) and the inner layer (102), the closed gap (2) is communicated with the air duct (6), and the air bag sheath (1) is made of rubber materials and can be expanded or contracted along with inflation or deflation; the guide wire (4) with a soft front end is arranged in an inner cavity (9) formed by the inner layer (102), two ends of the guide wire extend out of the inner cavity, and the front end of the guide wire (4) is fixed on the air bag sheath (1); the tail end of the air duct (6) is provided with a miniature constant pressure inflator pump (8).

2. The adjustable balloon flexible ureteroscope introducer sheath of claim 1, wherein: after inflation, the diameter of the inner cavity (9) expands to 0.5-0.8 cm, and after deflation, the inner layer (102) is attached to the guide wire (4).

3. The adjustable balloon flexible ureteroscope introducer sheath of claim 1, wherein:

the outer layer (101) is made of elastic rubber materials, the inner layer (102) is made of non-elastic rubber, and the diameter of the sealed gap (2) after inflation is 0.09-0.11 cm.

4. The adjustable balloon type ureteroscope introducer sheath according to claim 3, wherein: the cross section of the closed gap formed between the inner layer (102) and the outer layer (101) is of a circular ring structure, and a plurality of drawing wires (3) which are equal in length and are arranged at equal intervals are arranged between the inner layer (102) and the outer layer (101).

5. The adjustable balloon flexible ureteroscope introducer sheath of claim 1, wherein: the air duct (6) is fixed at one end of the outer layer (101) far away from the front end of the guide wire (4), and a constant pressure valve (7) is installed on the air duct (6).

6. The adjustable balloon flexible ureteroscope introducer sheath of claim 1, wherein: the length of the male air bag sheath (1) is 450mm +/-50 mm, and the length of the female air bag sheath (1) is 350mm +/-30 mm.

7. The adjustable balloon flexible ureteroscope introducer sheath of claim 3, wherein: the outer surface of the outer layer (101) is provided with a paraffin coating (5), and the paraffin coating (5) is uniformly attached to the surface of the outer layer (101).

8. The adjustable balloon flexible ureteroscope introducer sheath of claim 1, wherein: the front end of the guide wire (4) is made of soft silica gel materials.

9. The adjustable balloon flexible ureteroscope introducer sheath of claim 5, wherein: the miniature constant-pressure inflator pump (8) can enable the air bag sheath (1) to be inflated and expanded uniformly, and meanwhile, the inner diameter of the air bag sheath (1) can be adjusted by controlling pressure according to operation requirements.

10. The adjustable balloon flexible ureteroscope introducer sheath of claim 1, wherein: the front end of the guide wire is provided with a bayonet (11) which can be fixed by the inner layer (102), and the inner layer (102) can be separated from the bayonet (11) after inflation.