CN219921183U - Ureteral sheath and operation equipment - Google Patents

Abstract

The utility model provides ureteral sheath and surgical equipment, which comprises a substrate, a negative pressure pipe and a sheath pipe body, wherein a cavity is formed in the substrate, the output end of the negative pressure pipe is used for being connected with a negative pressure source, the input end of the negative pressure pipe is communicated with the cavity, the proximal end of the sheath pipe body is connected with the substrate, the sheath pipe body comprises a protruding part positioned at the proximal end, the protruding part is positioned in the cavity, and a containing area is formed between the peripheral wall of the protruding part and the inner wall of the cavity. According to the utility model, the protruding part at the proximal end of the sheath tube body is arranged in the cavity to form the accommodating area, the accommodating area is used for preventing the sample retained in the cavity from directly flowing back into the sheath tube body, so that the risk of pollution caused by the sample retained in the cavity of the matrix flowing out of the sheath tube body is reduced, the interval between the sealing ring and the sheath tube body is shortened, the passing performance of entering the sheath tube body is increased, and the use convenience and safety of the ureter sheath are effectively improved.

Description

Ureteral sheath and operation equipment

Technical Field

The utility model relates to the technical field of endoscopes, in particular to a ureteral sheath and surgical equipment.

Background

Ureteral sheaths are used in urological surgery to create a passageway for endoscopes and other instruments to enter the urinary tract. In carrying out the present utility model, the applicant has found that in the case of an existing ureteral sheath, such as the modified ureteral sheath disclosed in chinese patent publication No. CN114451970a, during sample extraction, the sample may flow through the central channel in the sheath holder and may reside in the central channel, and the retained sample may flow back into the sheath tube during subsequent use, resulting in contamination problems.

Disclosure of Invention

The utility model aims to provide a ureteral sheath and surgical equipment for solving the technical problems in the prior art, and mainly comprises the following two aspects:

the first aspect of the utility model provides a ureteral sheath, comprising

A substrate, in which a cavity is arranged;

the output end of the negative pressure pipe is used for connecting a negative pressure source, and the input end of the negative pressure pipe is communicated with the cavity;

the sheath body, the proximal end and the base member of sheath body are connected, and the sheath body is including the protruding portion that is located the proximal end, the protruding portion is located in the cavity, is equipped with the accommodation area between the perisporium of protruding portion and the inner wall of cavity.

Further, the ureteral sheath further comprises a connecting sleeve, the sheath body is arranged in the connecting sleeve in a penetrating mode, and the sheath body is connected with the base body through the connecting sleeve.

Further, the connection sleeve comprises an extension at the distal end, the extension being axially disposed along the sheath body.

Further, the base body is provided with a mounting hole, the peripheral wall of the near end of the connecting sleeve is provided with a clamping groove, and the mounting hole is clamped in the clamping groove.

Further, the connecting sleeve comprises a reinforcing part which is arranged close to the clamping groove, the reinforcing part is arranged outside the base body, an abutting surface is arranged on the reinforcing part, and the abutting surface abuts against the end face of the base body where the mounting hole is located.

Further, a limiting groove is formed in the inner wall of the reinforcing portion, and a limiting piece matched with the limiting groove is arranged on the peripheral wall of the sheath body.

Further, the diameter of the limiting piece is larger than that of the mounting hole.

Further, the wall thickness of the reinforcement portion gradually decreases from the proximal end to the distal end in the axial direction of the sheath body.

Further, the proximal end of the connecting sleeve is provided with a guide surface, the clamping groove is located on the diameter of the guide surface and the diameter of the reinforcing part, and the guide surface is used for clamping the mounting hole in the clamping groove.

The second aspect of the utility model provides a surgical device comprising a negative pressure source and the ureteral sheath, wherein the negative pressure source is connected with the output end of a negative pressure pipe.

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

according to the utility model, the protruding part at the proximal end of the sheath tube body is arranged in the cavity to form the accommodating area, the accommodating area is used for preventing the sample retained in the cavity from directly flowing back into the sheath tube body, so that the risk of pollution caused by the sample retained in the cavity of the matrix flowing out of the sheath tube body is reduced, the interval between the sealing ring and the sheath tube body is shortened, the passing performance of entering the sheath tube body is increased, and the use convenience and safety of the ureter sheath are effectively 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 view of the structure of a ureteral sheath of the present utility model;

fig. 2 is a schematic view of the internal structure of the ureteral sheath of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the structure of the sheath body and the connection sleeve of the present utility model;

FIG. 5 is a cross-sectional view of the sheath body of the present utility model;

FIG. 6 is a schematic view of another construction of the sheath body and connection sleeve of the present utility model;

in the drawing the view of the figure,

10. a base; 110. a cavity; 120. a receiving area; 20. a negative pressure pipe; 30. a sheath body; 310. a protruding portion; 320. a limiting piece; 40. connecting sleeves; 410. a clamping groove; 420. an extension; 430. a reinforcing part; 431. a limit groove; 432. an abutment surface; 440. and a guide surface.

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 ureteral sheath, as shown in figures 1-5, comprising

A base body 10, wherein a cavity 110 is arranged in the base body 10;

the negative pressure pipe 20, the output end of the negative pressure pipe 20 is used for connecting a negative pressure source, and the input end of the negative pressure pipe 20 is communicated with the cavity 110;

the sheath body 30, the proximal end of the sheath body 30 is connected with the base 10, the sheath body 30 includes a protrusion 310 located at the proximal end, the protrusion 310 is located in the cavity 110, and a receiving area 120 is provided between the peripheral wall of the protrusion 310 and the inner wall of the cavity 110.

In the existing ureteral sheath, as disclosed in chinese patent publication No. CN114451970a, in the process of sample extraction, a sample may flow through a central channel in a sheath seat and possibly stay in the central channel, and as a result, a proximal end port of a sheath tube is smoothly transitionally communicated with a port of the central channel, and thus for the residual sample on an inner wall of the central channel, the residual sample may flow back into the sheath tube and flow out from a distal end of the sheath tube in a subsequent use process, particularly in a process of introducing an endoscope into a human body by using the sheath tube, when the endoscope enters the sheath tube through the sheath seat, the residual sample in the central channel is more easily pushed into the sheath tube and pushed out from the distal end of the sheath tube, so that a pollution problem is caused; in this embodiment, the protruding portion 310 at the proximal end of the sheath body 30 is disposed in the cavity 110, and the accommodating area 120 is disposed between the peripheral wall of the protruding portion 310 and the inner wall of the cavity 110, so that the accommodating area 120 is used to accommodate the retained sample flowing into the cavity 110, and the retained sample in the cavity 110 is prevented from directly flowing back into the sheath body 30, so that the risk of pollution caused by the retained sample flowing out of the sheath body 30 in the cavity 110 of the matrix 10 is reduced in the use process, in addition, due to the structure of the protruding portion 310, the space between the sealing ring and the sheath body 30 is shortened, the trafficability of the endoscope entering the sheath body 30 through the sealing ring is increased in the process of guiding and inserting the endoscope, and the use convenience and safety of the ureteral sheath are effectively improved.

In the prior art, the sheath tube and the sheath seat are generally fixed in a gluing way, because the length-diameter ratio of the sheath tube is larger, and the gluing length between the sheath tube and the sheath seat is relatively shorter, when a ureter sheath is taken, the ureter sheath is very easy to be influenced by the self weight of the sheath tube, the length of the sheath tube is taken as a moment arm, the joint of the sheath tube and the sheath seat is taken as a fulcrum, the sheath tube has a tendency of bending deformation, and the sheath tube is concentrated at the joint of the sheath tube and the sheath seat, so that the sheath tube and the sheath seat are easy to be degummed, and the normal use of the sheath tube is influenced; in order to avoid the problem of degumming, the ureteral sheath can also comprise a connecting sleeve 40, wherein the sheath body 30 is arranged in the connecting sleeve 40 in a penetrating way, and the sheath body 30 is connected with the matrix 10 through the connecting sleeve 40, so that the connection stability, safety and tightness between the sheath body 30 and the matrix 10 are ensured.

In order to avoid the problem that the sheath body 30 or the matrix 10 is damaged due to the fact that bending deformation is concentrated at the joint of the sheath body 30 and the matrix 10, the connecting sleeve 40 can be provided with the extending part 420 at the far end, the extending part 420 is axially arranged along the sheath body 30, the sheath body 30 is coated by the extending part 420, the stress contact area between the sheath body 30 and the matrix 10 is increased, the stress pressure between the sheath body 30 and the matrix 10 is reduced, and the problem that stress is concentrated at the joint of the sheath body 30 and the matrix 10 when the sheath body 30 has a tendency of bending deformation is avoided, so that stress dispersion is realized, and therefore the structural safety of the sheath body 30 and the matrix 10 is protected.

In order to realize stable connection between the connecting sleeve 40 and the base body 10, a mounting hole may be provided on the base body 10, a clamping groove 410 is provided on the proximal peripheral wall of the connecting sleeve 40, and the mounting hole is clamped in the clamping groove 410, so as to realize clamping connection between the connecting sleeve 40 and the base body 10.

In some embodiments, the connecting sleeve 40 may be made of flexible resin material, and the inner diameter of the mounting hole is slightly smaller than the diameter of the clamping groove 410, so that when the connecting sleeve 40 is clamped on the mounting hole, the inner wall of the mounting hole can squeeze the inner wall of the clamping groove 410, and the squeezing is conducted between the connecting sleeve 40 and the sheath body 30, so that the connection tightness between the connecting sleeve 40 and the sheath body 30 is improved, and the connection tightness between the sheath body 30, the connecting sleeve 40 and the matrix 10 is improved; preferably, the sheath body 30 has an outer diameter matching the diameter of the passage in the adapter sleeve 40.

In order to facilitate the installation of the ureteral sheath, the connecting sleeve 40 can be provided with a reinforcing part 430 which is arranged close to the clamping groove 410, the reinforcing part 430 is positioned outside the base body 10, the reinforcing part 430 is provided with an abutting surface 432, the abutting surface 432 abuts against the end surface of the base body 10 where the mounting hole is positioned, when the ureteral sheath is processed and produced, the connecting sleeve 40 is sleeved at the proximal end of the sheath body 30, then the sheath body 30 and the connecting sleeve 40 are inserted from outside to inside from the mounting hole until the abutting surface 432 of the reinforcing part 430 abuts against the base body 10, and at the moment, the mounting hole is exactly clamped in the clamping groove 410 of the connecting sleeve 40, so that the rapid installation connection of the ureteral sheath is realized; in some embodiments, to further improve the sealing performance of the connection between the sheath body 30 and the substrate 10, glue may be applied to the connection between the connection sleeve 40 and the substrate 10 and/or the connection between the connection sleeve 40 and the sheath body 30 for bonding.

In order to realize stable connection between the sheath body 30 and the connecting sleeve 40, as shown in fig. 5, a limiting groove 431 may be provided on the inner wall of the reinforcing portion 430, a limiting piece 320 matched with the limiting groove 431 is provided on the peripheral wall of the sheath body 30, and through cooperation of the limiting piece 320 and the limiting groove, slipping of the sheath body 30 and the connecting sleeve 40 during installation or use is avoided, and safety and stability of the device structure are improved.

In the ureteral sheath processing production process, in the process of inserting the sheath body 30 and the connecting sleeve 40 from the mounting hole, in order to avoid the insertion depth of the connecting sleeve 40 exceeding the expected value caused by overlarge thrust, the diameter of the limiting piece 320 can be set to be larger than the diameter of the mounting hole, the insertion stroke of the sheath body 30 and the connecting sleeve 40 in the mounting hole is limited by the limiting piece 320, and the convenience and the high efficiency of ureteral sheath production processing are improved.

In order to reduce the adverse effect generated by bending deformation of the sheath body 30, the wall thickness of the reinforcing part 430 can be gradually reduced from the proximal end to the distal end along the axial direction of the sheath body 30, the mechanical strength of the joint of the sheath body 30 and the matrix 10 can be enhanced by using the reinforcing part 430, the bending deformation of the sheath body 30 can be guided to the extending part 420, the extending part 420 mainly generates bending deformation corresponding to the sheath body 30, and in the process, the extending part 420 effectively supports and protects the sheath body 30, so that the adverse effect generated by bending deformation of the sheath body 30 is reduced.

In order to facilitate the rapid insertion of the sheath body 30 and the connecting sleeve 40 from the mounting hole in the ureteral sheath processing production process, as shown in fig. 6, a guiding surface 440 may be provided at the proximal end of the connecting sleeve 40, the clamping groove 410 is located between the guiding surface 440 and the reinforcing portion 430, the guiding surface 440 is used for realizing the clamping of the mounting hole in the clamping groove 410, and the guiding surface 440 is used for orderly guiding the sheath body 30 and the connecting sleeve 40 from the mounting hole insertion process, thereby reducing the insertion resistance and improving the installation convenience; specifically, the guiding surface 440 may be a slope, an arc surface, or a truncated conical surface, which is not particularly limited herein.

Example 2:

an embodiment of the present utility model provides a surgical device comprising a source of negative pressure connected to the output of a negative pressure tube 20, and the ureteral sheath of embodiment 1.

In the use process, the negative pressure source can be controlled to work, so that a pressure difference is generated between the output end of the negative pressure pipe 20 and the distal end port of the sheath pipe body 30, a target sample can be sucked by utilizing the pressure difference, the sample enters the cavity 110 through the sheath pipe body 30, and the assembly in a human body is convenient to sample and detect.

In addition, when using ureteral sheath, can cooperate the endoscope to use, specifically can insert the endoscope front end in the passageway of sheath body 30, utilize sheath body 30 to guide into the target position of human body cavity fast with the endoscope front end, make things convenient for the operator to explore 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 ureteral sheath, which is characterized by comprising

A base body (10), wherein a cavity (110) is arranged in the base body (10);

the negative pressure pipe (20), the output end of the negative pressure pipe (20) is used for connecting a negative pressure source, and the input end of the negative pressure pipe (20) is communicated with the cavity (110);

the sheath body (30), the proximal end and the base member (10) of sheath body (30) are connected, and sheath body (30) are including being located protruding portion (310) of proximal end, protruding portion (310) are located cavity (110), are equipped with accommodation area (120) between the perisporium of protruding portion (310) and the inner wall of cavity (110).

2. The ureteral sheath according to claim 1, characterized in that the ureteral sheath further comprises a connecting sleeve (40), the sheath body (30) is arranged in the connecting sleeve (40) in a penetrating manner, and the sheath body (30) is connected with the base body (10) through the connecting sleeve (40).

3. Ureteral sheath according to claim 2, characterized in that the connection sleeve (40) comprises a distally located extension (420), the extension (420) being axially arranged along the sheath body (30).

4. A ureteral sheath according to claim 2 or 3, characterized in that the base body (10) is provided with a mounting hole, the proximal peripheral wall of the connecting sleeve (40) is provided with a clamping groove (410), and the mounting hole is clamped in the clamping groove (410).

5. The ureteral sheath according to claim 4, characterized in that the connecting sleeve (40) comprises a reinforcing part (430) arranged close to the clamping groove (410), the reinforcing part (430) is positioned outside the base body (10), an abutting surface (432) is arranged on the reinforcing part (430), and the abutting surface (432) abuts against the end face of the base body (10) where the mounting hole is positioned.

6. The ureteral sheath according to claim 5, characterized in that the inner wall of the reinforcement (430) is provided with a limiting groove (431), and the peripheral wall of the sheath body (30) is provided with a limiting piece (320) matched with the limiting groove (431).

7. The ureteral sheath according to claim 6, characterized in that the diameter of the stop (320) is greater than the diameter of the mounting hole.

8. The ureteral sheath according to claim 5, characterized in that the wall thickness of the reinforcement (430) gradually decreases from the proximal end to the distal end along the axial direction of the sheath body (30).

9. The ureteral sheath according to claim 5, characterized in that the proximal end of the connection sleeve (40) is provided with a guiding surface (440), the clamping groove (410) being located at the diameter of the guiding surface (440) and the reinforcement (430), the guiding surface (440) being adapted to achieve a clamping of the mounting hole in the clamping groove (410).

10. Surgical apparatus comprising a source of negative pressure and a ureteral sheath according to any of claims 1 to 9, said source of negative pressure being connected to the output of a negative pressure tube (20).