CN219962993U - Negative pressure regulation and control structure and ureter sheath - Google Patents

Abstract

The utility model provides a negative pressure regulating structure and a ureter sheath, which comprises a negative pressure pipe and a sealing piece, wherein the negative pressure pipe comprises a first input end, a second input end and an output end, the output end is used for being communicated with a negative pressure source, the first input end is used for being communicated with a sheath pipe body, and the second input end is a through hole positioned on the peripheral wall of the negative pressure pipe; the sealing element is used for controlling the opening degree of the through hole, the sealing element is in sliding connection with the negative pressure pipe, the sliding stroke between the sealing element and the negative pressure pipe comprises a first position, a second position and a third position, the second position is the middle stroke position of the sliding stroke, and the opening degree of the corresponding through hole is zero. The utility model can realize continuous and rapid treatment of multiple stones, and the whole process does not need to be distracted by an operator to check whether the working negative pressure is regulated and controlled in place, so that the time for continuous stone breaking operation is shortened, the operation risk is reduced, the operator can concentrate on the operation, and the operation efficiency and operation safety of the equipment are improved.

Description

Negative pressure regulation and control structure and ureter sheath

Technical Field

The utility model relates to the technical field of endoscopes, in particular to a negative pressure regulating structure and a ureteral sheath.

Background

Ureteral sheaths are used in urological surgery to create a passageway for endoscopes and other instruments to enter the urinary tract. In the process of realizing the utility model, the applicant finds that the prior ureteral sheath, such as an guiding sheath disclosed in Chinese patent publication No. CN208096788U, needs to be manually adjusted by dispersing the attention of an operator when carrying out graded aspiration treatment on the stone in the operation process, and influences the operation safety and the operation efficiency.

Disclosure of Invention

The utility model aims to provide a negative pressure regulating structure and a ureteral sheath, which are used for solving the technical problems in the prior art and mainly comprise the following two aspects:

the first aspect of the utility model provides a negative pressure regulating structure of a ureteral sheath, comprising

The negative pressure pipe comprises a first input end, a second input end and an output end, wherein the output end is used for being communicated with a negative pressure source, the first input end is used for being communicated with the sheath pipe body, and the second input end is a through hole positioned on the peripheral wall of the negative pressure pipe;

the sealing piece is used for controlling the opening degree of the through hole, the sealing piece is in sliding connection with the negative pressure pipe, the sliding stroke between the sealing piece and the negative pressure pipe comprises a first position, a second position and a third position, the first position is the lower limit of the sliding stroke, the opening degree of the corresponding through hole is K1, the second position is the middle stroke position of the sliding stroke, the opening degree of the corresponding through hole is K2, the third position is the upper limit of the sliding stroke, the opening degree of the corresponding through hole is K3, K2 is zero, and K3 is more than K1 and more than K2.

Further, a sealing surface is arranged on the sealing piece and is matched with the outer peripheral wall of the negative pressure pipe where the through hole is located.

Further, the sealing piece comprises a base part, a sliding part and a limiting part, wherein the base part is positioned at the outer side of the negative pressure pipe, the sealing surface is arranged on the base part, the fixed end of the sliding part is connected with the sealing surface, the free end of the sliding part passes through the through hole and is connected with the limiting part, the limiting part is positioned in the negative pressure pipe, and the limiting part is used for being matched with the base part to limit and restrict the sliding part in the through hole.

Further, in the second position, the sealing element is expanded with the pipe wall of the corresponding negative pressure pipe.

Further, in the first position, the sealing element is expanded and connected with the pipe wall of the corresponding negative pressure pipe; and/or, in the third position, the sealing element is expanded and connected with the pipe wall of the corresponding negative pressure pipe.

Further, the space between the base part and the limiting part is S1, the pipe wall thickness of the negative pressure pipe is S2, and the S2 gradually decreases from the second position to two sides along the sliding direction of the sealing piece, so that at least partial area S2 < S1 between the first position and the second position and at least partial area S2 < S1 between the second position and the third position are realized.

Further, a gap is provided between the sliding portion and the inner wall of the through hole.

Further, the free end of the sliding part is provided with a guide groove for guiding deformation of the free end of the sliding part during installation to reduce the size of the free end of the sliding part.

Further, a protruding part is arranged on the peripheral wall of the negative pressure pipe, a groove is arranged in the protruding part, and the sealing piece and the through hole are positioned in the groove; and/or the sealing element is provided with a control part.

The second aspect of the utility model provides a ureteral sheath, which comprises a matrix, a sheath body and the negative pressure regulating structure, wherein a cavity is arranged in the matrix, and the first input end is communicated with the proximal end of the sheath body through the cavity.

Compared with the prior art, the utility model has at least the following technical effects:

the utility model can realize continuous and rapid treatment of multiple stones, and the whole process does not need to be distracted by an operator to check whether the working negative pressure is regulated and controlled in place, so that the time for continuous stone breaking operation is shortened, the operation risk is reduced, the operator can concentrate on the operation, and the operation efficiency and operation safety of the equipment are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the embodiments of the present utility model or the drawings used in the description of the prior art, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a negative pressure regulating structure of the present utility model;

FIG. 2 is a top view of the negative pressure regulating structure of the present utility model;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a right side view of the negative pressure regulating structure of the present utility model;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4 (with the seal in a first position);

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4 (with the seal in a second position);

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 4 (with the seal in a third position);

in the drawing the view of the figure,

100. a negative pressure pipe; 110. an output end; 120. a first input; 130. a through hole; 140. a protruding portion; 1401. a groove; 200. a seal; 210. a base; 220. a sliding part; 2201. a guide groove; 230. a limit part; 240. a control unit; 300. a base; 310. a cavity.

Detailed Description

The following description provides many different embodiments, or examples, for implementing different features of the utility model. The elements and arrangements described in the following specific examples are presented for purposes of brevity and are provided only as examples and are not intended to limit the utility model.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the present utility model, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.

In addition, in the utility model, the 'near end' and the 'far end' are far and near positions of the structure relative to human body operation under the use environment, so that the description of the position relationship among the components is convenient, and meanwhile, the understanding is convenient; for the same component, "proximal" and "distal" are relative positional relationships of the component, not absolute; accordingly, it should be understood from the perspective of implementing the principles of the present utility model without departing from the spirit of the utility model.

Example 1:

the embodiment of the utility model provides a negative pressure regulating structure of a ureteral sheath, which is shown in figures 1 to 4 and comprises

The negative pressure tube 100, wherein the negative pressure tube 100 comprises a first input end 120, a second input end and an output end 110, the output end 110 is used for being communicated with a negative pressure source, the first input end 120 is used for being communicated with the sheath tube body, and the second input end is a through hole 130 positioned on the peripheral wall of the negative pressure tube 100;

the sealing element 200 is used for controlling the opening of the through hole 130, the sealing element 200 is in sliding connection with the negative pressure pipe 100, the sliding stroke between the sealing element 200 and the negative pressure pipe 100 comprises a first position, a second position and a third position, the first position is the lower stroke limit of the sliding stroke, the corresponding opening of the through hole is K1, the second position is the middle stroke position of the sliding stroke, the corresponding opening of the through hole is K2, the third position is the upper stroke limit of the sliding stroke, the corresponding opening of the through hole is K3, wherein K2 is zero, and K3 is more than K1 and more than K2.

When the ureteral sheath is applied to an operation, since stones at a plurality of positions can be orderly and alternately crushed and then subjected to stone suction treatment in the same operation, the regulation and control frequency of the working state of the ureteral sheath is higher, on the other hand, different negative pressures correspond to different working modes, when the opening of a through hole is zero, the working negative pressure of the ureteral sheath is maximum, the working negative pressure can be generally correspondingly set to suck a target with larger mass, when the opening of the through hole is maximum, the working negative pressure of the ureteral sheath is minimum, the working negative pressure can be generally correspondingly set to not suck, and when the target with smaller mass needs to be selectively sucked first, the opening of the through hole needs to be controlled to be at a middle value, and meanwhile, in order to avoid blockage of the ureteral sheath, the target with smaller mass needs to be sucked first, and after the suction of the stone at one position is finished, the working negative pressure is adjusted to be minimum, so that the next stone is conveniently transferred to be treated; in the existing ureteral sheath, as disclosed in the chinese patent publication No. CN208096788U, in the operation process, the opening of the through hole 130 is controlled by the sliding bump to realize air pressure adjustment, but only the air pressure adjustment can be performed along the sliding direction from the maximum opening to the minimum opening, and only the maximum opening and the minimum opening can be rapidly controlled in a reappearance mode, so that when multiple stones are continuously processed, the operator needs to concentrate on manual adjustment in the working state corresponding to each middle opening, which results in distraction of the operator and affects the operation safety and operation efficiency of the operation; in this embodiment, the upper limit of the sliding travel of the sealing member 200 on the negative pressure pipe 100 is set to the maximum opening, the middle opening is set corresponding to the state of not performing suction operation, the lower limit of the sliding travel of the sealing member 200 on the negative pressure pipe 100 is set to the middle opening, the target suction operation with small mass is corresponding to the target suction operation with small mass, the middle travel position of the sliding travel of the sealing member 200 on the negative pressure pipe 100 is set to the minimum opening, and the target suction operation with large mass is corresponding to the target suction operation with small mass, so that when the stone is processed, after the stone breaking operation is completed, the operator can blindly operate to slide the sealing member 200 to the lower limit of the sliding travel, as shown in fig. 5, the working pressure of the ureteral sheath is quickly regulated to the middle opening, so that the stone target with small mass can be sucked quickly, after the stone suction with small mass is completed, the sealing member 200 is moved from the lower limit of the sliding travel to the upper limit of the sliding travel, and during the movement, the position of the sealing element 200 gradually approaches to the second position, namely, the opening of the through hole 130 gradually decreases to the minimum opening, so as to realize rapid gradual conversion from the middle opening to the minimum opening, suction is carried out on stones with large mass, after the stones with large mass are sucked, the suction work of the stones at the positions is completed, the sealing element 200 can be further moved to the upper limit of the sliding stroke and moved to the upper limit of the sliding stroke, as shown in fig. 7, the working negative pressure of the ureteral sheath is minimum, and corresponds to a state without suction work, an operator can control and transfer to the position of the next stones, so as to realize continuous and rapid treatment on the stones, and the whole process does not need the distraction of the operator to check whether the working negative pressure is regulated and controlled in place, so that the time for continuous stone breaking operation is shortened, the operation risk is reduced, the operator can concentrate on the operation, the control efficiency and the operation safety of the equipment are improved.

Specifically, to ensure accurate regulation and control of the opening of the through hole 130 by the sealing element 200, a sealing surface may be disposed on the sealing element 200, and the sealing surface is matched with the peripheral wall of the negative pressure tube 100 where the through hole 130 is located, so as to realize effective sealing and shielding of the through hole 130 by the sealing element 200, and ensure accurate regulation of the opening of the through hole 130.

In order to achieve the sliding connection between the sealing member 200 and the negative pressure pipe 100, the sealing member 200 may be provided to include a base 210, a sliding portion 220, and a limiting portion 230, wherein the base 210 is located outside the negative pressure pipe 100, the sealing surface is provided on the base 210, a fixed end of the sliding portion 220 is connected to the sealing surface, a free end of the sliding portion 220 passes through the through hole 130 to be connected to the limiting portion 230, the limiting portion 230 is located in the negative pressure pipe 100, and the limiting portion 230 is used to cooperate with the base 210 to limit and constrain the sliding portion 220 in the through hole 130.

In order to facilitate accurate regulation and control of the second position state, the sealing element 200 and the pipe wall of the corresponding negative pressure pipe 100 can be arranged at the second position in an expanded mode, as shown in fig. 6, when an operator slides the sealing element 200 to the second position, the sliding resistance is increased, the operator knows that the operator slides to the second position through sliding resistance feedback, the minimum opening degree is achieved, meanwhile, the second position is locked through expansion, the operator does not manually maintain the second position state, control is simplified, and the equipment using convenience is improved.

In some embodiments, to realize the lock control of the first position, the sealing element 200 and the pipe wall of the corresponding negative pressure pipe 100 may be provided to expand and connect in the first position, as shown in fig. 5, so that the operator does not manually maintain the state of the first position, which simplifies the operation and improves the convenience of using the device.

In some embodiments, to realize the locking control of the third position, the sealing element 200 and the pipe wall of the corresponding negative pressure pipe 100 may be provided in the third position, as shown in fig. 7, so that the operator does not manually maintain the state of the third position, thereby simplifying the operation and improving the convenience in use of the device.

In the second position, in order to reduce the sliding resistance of the sealing element 200 when the sealing element 200 and the pipe wall of the corresponding negative pressure pipe 100 are expanded, the interval between the base 210 and the limiting part 230 is set to be S1, the pipe wall thickness of the negative pressure pipe 100 is set to be S2, and the S2 is gradually reduced from the second position to two sides along the sliding direction of the sealing element 200, so that at least partial area S2 < S1 between the first position and the second position is realized, and at least partial area S2 < S1 between the second position and the third position is realized, so that the friction resistance between the sealing element 200 and the negative pressure pipe 100 is reduced when the sealing element 200 slides from the second position to the first position or the third position; correspondingly, at the second position, S1 is less than S2.

In order to reduce the sliding resistance of the seal member 200 on the negative pressure pipe 100, a gap may be provided between the sliding portion 220 and the inner wall of the through hole 130 to reduce the contact area between the seal member 200 and the negative pressure pipe 100 and reduce the frictional resistance.

In order to reduce the resistance of the sealing member 200 to the negative pressure pipe 100, a guide groove 2201 may be provided at the free end of the sliding portion 220, as shown in fig. 3, the guide groove 2201 being used to guide deformation of the free end of the sliding portion 220 during installation to reduce the size of the free end of the sliding portion 220; during installation, the free end of the sliding part 220 is pushed into the through hole 130, the limiting part 230 is extruded through the inner wall of the through hole 130, the guide groove 2201 is matched, the free end of the sliding part 220 is forced to deform into the guide groove 2201, the width of the limiting part 230 is reduced, the free ends of the limiting part 230 and the sliding part 220 can pass through the through hole 130, after the limiting part 230 passes through the through hole 130, the deformation of the sliding part 220 is recovered, the sliding part 220 is limited and restrained in the through hole 130 by the matching of the limiting part 230, the inner wall of the negative pressure pipe 100 and the sealing surface, and the effective realization of sliding fit between the sealing element 200 and the negative pressure pipe 100 is ensured.

In order to improve the mechanical strength of the negative pressure pipe 100, a protrusion 140 may be provided on the peripheral wall of the negative pressure pipe 100, a groove 1401 is provided in the protrusion 140, and the sealing member 200 and the through hole 130 are located in the groove 1401, so as to reduce the influence of the through hole 130 on the structural strength of the negative pressure pipe 100, and improve the structural stability and mechanical strength of the negative pressure pipe 100 at the through hole 130.

In the sliding stroke of the seal member 200, to achieve that one of the first position and the third position is the maximum opening, the other is the intermediate opening, and the second position is the minimum opening, the inner wall of the groove 1401 may be set to limit the base 210, so as to achieve the limit constraint of the sliding stroke between the seal member 200 and the negative pressure pipe 100, and the inner wall of the through hole 130 may also be set to limit the sliding portion 220, so as to achieve the limit constraint of the sliding stroke between the seal member 200 and the negative pressure pipe 100.

For the convenience of an operator to drive the seal member 200 to slide axially along the negative pressure pipe 100, a manipulation portion 240 may be provided on the seal member 200, and in particular, the manipulation portion 240 may be a handle, a finger ring, or a friction layer, which is not particularly limited herein.

Example 2

The embodiment of the utility model provides a ureteral sheath, which comprises a matrix 300, a sheath body and a negative pressure regulating structure in embodiment 1, wherein a cavity 310 is arranged in the matrix 300, and the first input end 120 is communicated with the proximal end of the sheath body through the cavity 310.

In the use, aim at the target with sheath body distal end, through the operating pressure of negative pressure regulation structure accuse sheath body, can realize sheath body operating pressure's definite value regulation and control fast, help the operator to concentrate on the continuous processing of multiple calculus, improve ureter sheath's use convenience and security.

In some embodiments, the ureteral sheath may be used with an endoscope, in particular, the endoscope front end may be inserted into a channel of the sheath body, and the endoscope front end is quickly guided to a target position of a body cavity by using the sheath body, so that an operator can conveniently probe or sample at the target position through the endoscope.

It should be noted that, the endoscope in the embodiment of the present utility model may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a enteroscope, an otoscope, a nasal scope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc., and the embodiment of the present utility model does not specifically limit the type of the endoscope.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A negative pressure regulation and control structure of ureteral sheath is characterized by comprising

The negative pressure pipe (100), the negative pressure pipe (100) comprises a first input end (120), a second input end and an output end (110), the output end (110) is used for being communicated with a negative pressure source, the first input end (120) is used for being communicated with a sheath pipe body, and the second input end is a through hole (130) positioned on the peripheral wall of the negative pressure pipe (100);

the sealing piece (200), sealing piece (200) are used for controlling through-hole (130) aperture, sealing piece (200) and negative pressure pipe (100) sliding connection, and the slip stroke between sealing piece (200) and negative pressure pipe (100) includes first position, second position and third position, first position is the stroke lower limit of slip stroke, corresponds through-hole (130) aperture and is K1, the second position is the intermediate range position of slip stroke, corresponds through-hole (130) aperture and is K2, the third position is the stroke upper limit of slip stroke, corresponds through-hole (130) aperture and is K3, wherein, K2 is zero, K3 > K1 > K2.

2. The negative pressure regulating structure according to claim 1, wherein the sealing member (200) is provided with a sealing surface, and the sealing surface is matched with the outer peripheral wall of the negative pressure pipe (100) where the through hole (130) is located.

3. The negative pressure regulating structure according to claim 2, wherein the sealing member (200) comprises a base (210), a sliding portion (220) and a limiting portion (230), the base (210) is located outside the negative pressure pipe (100), the sealing surface is disposed on the base (210), the fixed end of the sliding portion (220) is connected with the sealing surface, the free end of the sliding portion (220) passes through the through hole (130) to be connected with the limiting portion (230), the limiting portion (230) is located in the negative pressure pipe (100), and the limiting portion (230) is used for being matched with the base (210) to limit and restrain the sliding portion (220) in the through hole (130).

4. A negative pressure regulating structure according to claim 3, characterized in that in the second position the sealing member (200) is expanded against the wall of the corresponding negative pressure tube (100).

5. A negative pressure regulating structure according to claim 3, characterized in that in the first position the sealing member (200) is expanded against the wall of the corresponding negative pressure tube (100); and/or, in the third position, the sealing element (200) is expanded with the wall of the corresponding negative pressure tube (100).

6. The negative pressure regulating structure according to any one of claims 3 to 5, wherein a space between the base (210) and the stopper (230) is S1, a wall thickness of the negative pressure pipe (100) is S2, and the S2 is gradually reduced from the second position to both sides in a sliding direction of the sealing member (200) so as to achieve at least a partial area S2 < S1 between the first position and the second position, and at least a partial area S2 < S1 between the second position and the third position.

7. The negative pressure regulating structure according to any one of claims 3 to 5, wherein a gap is provided between the sliding portion (220) and an inner wall of the through hole (130).

8. The negative pressure regulating structure according to claim 7, wherein the free end of the sliding portion (220) is provided with a guide groove (2201), the guide groove (2201) being for guiding deformation of the free end of the sliding portion (220) during installation to reduce the size of the free end of the sliding portion (220).

9. The negative pressure regulating structure according to any one of claims 1 to 5, wherein a protrusion (140) is provided on a peripheral wall of the negative pressure pipe (100), a groove (1401) is provided in the protrusion (140), and the seal member (200) and the through hole (130) are located in the groove (1401); and/or the sealing element (200) is provided with a control part (240).

10. A ureteral sheath, characterized by comprising a base body (300), a sheath body and the negative pressure regulating structure according to any one of claims 1-9, wherein a cavity (310) is arranged in the base body (300), and the first input end (120) is communicated with the proximal end of the sheath body through the cavity (310).