CN218792221U

CN218792221U - Nephroscope

Info

Publication number: CN218792221U
Application number: CN202320093796.4U
Authority: CN
Inventors: 唐剑
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-04-07
Anticipated expiration: 2033-01-31
Also published as: WO2024159665A1

Abstract

The utility model relates to the technical field of endoscopes, in particular to a nephroscope, which comprises a handle part and an insertion part connected with the handle part, wherein the insertion part comprises a scope body and a tube sheath, the tube sheath is sleeved outside the scope body and forms a suction channel between the two, the far end of the scope body is provided with an active bending section, the far end of the tube sheath is provided with a passive bending section, when the passive bending section of the tube sheath is inserted into the first part of a detection object, the passive bending section of the tube sheath keeps the original state, and when the passive bending section of the tube sheath is inserted into the second part of the detection object, the passive bending section of the tube sheath can be bent by the active bending section; after the operation passageway has been established at the waist, the tube sheath that is in original state can assist the endoscope body to enter into human renal pelvis department, gets into human back, and the passive bending section of tube sheath can follow the bending section of initiative and take place to buckle, makes the orientation of endoscope body distal end unanimously with the orientation of tube sheath distal end generally, so can realize carrying out accurate absorption to the rubble, can avoid carrying out puncture trompil many times at the human body simultaneously.

Description

Nephroscope

Technical Field

The utility model relates to an endoscope technical field especially relates to a nephroscope.

Background

The endoscope is a medical diagnosis instrument, generally comprises a handle and an insertion part, the insertion part can extend into a human body, internal tissues of the human body can be observed through a camera module packaged at the far end of the insertion part, a doctor can be helped to judge the position of pathological changes in the human body and the tissue structure characteristics of the position of the pathological changes, and the active bending section of the insertion part can be subjected to posture adjustment by operating the handle of the endoscope, so that the orientation of the camera module can be adjusted, fixed-point observation and other functions can be realized.

The treatment of kidney stones usually adopts two operation methods, namely an antegrade method and a retrograde method, wherein the antegrade method is to place a nephroscope into the kidney through a ureter to remove stones, and the method is to treat the stones through the natural cavity of a human body and has the advantages of small wound, quick recovery, definite curative effect and the like; for patients without the condition of the antegrade operation, the retrograde approach is often used, in which a puncture is made in the waist, a nephroscope is inserted into the kidney through the puncture, and renal stones are broken and removed by a lithotripsy tool such as laser or ultrasound. However, the nephroscope in the related art has a slow calculus removal speed and a poor calculus removal effect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a nephroscope to solve the technical problem that the nephroscope in the correlation technique exists gets the stone slow speed and gets the stone effect poor.

In order to solve the above problem, the utility model adopts the following technical scheme:

the present application provides a nephroscope including a handle portion and an insertion portion connecting the handle portion; wherein:

the insertion part comprises a scope body and a sheath, the sheath is sleeved on the outer side of the scope body, a suction channel is formed between the scope body and the sheath, the distal end of the scope body is provided with an active bending section, the distal end of the sheath is provided with a passive bending section, when the passive bending section of the sheath is inserted into a first part of a detection object, the passive bending section of the sheath is kept in an original state, and when the passive bending section of the sheath is inserted into a second part of the detection object, the passive bending section of the sheath can be bent along with the bending of the active bending section.

Further, the insertion portion further comprises an inner supporting piece, and the inner supporting piece is arranged between the active bending section and the passive bending section of the pipe sheath.

Furthermore, the inner supporting pieces are of strip structures, the inner supporting pieces extend along the axial direction of the insertion portion, and the inner supporting pieces are distributed along the circumferential direction of the insertion portion.

Further, the plurality of inner struts are non-uniformly distributed along a circumference of the insertion portion.

Furthermore, the outer end of the inner supporting piece is fixed on the inner wall of the passive bending section of the tube sheath, and the inner end of the inner supporting piece is abutted with the outer wall of the active bending section; or the outer end of the inner supporting piece is abutted against the inner wall of the passive bending section of the tube sheath, and the inner end of the inner supporting piece is fixed on the outer wall of the active bending section.

Further, the inner support member has a guide portion projecting from the distal end wall of the sheath, and the guide portion has a guide surface disposed obliquely with respect to the axis of the insertion portion.

Further, the sheath includes a base section and a flexible section, the base section having a greater rigidity than the flexible section, the flexible section constituting the passive bending section.

Further, the proximal end of the tube sheath is provided with a suction nozzle and a pressure measuring nozzle which are communicated with the suction channel.

Further, a portion of the active bending section protrudes from the distal end wall of the sheath, or the distal end of the active bending section is flush with the distal end wall of the sheath.

The utility model discloses a technical scheme can reach following beneficial effect:

firstly, in the application, the insertion part is an integrated structure consisting of an endoscope body and a tube sheath, an operation channel formed by a puncture hole in the waist of a detection object forms a first part of the detection object, the renal pelvis reached by the distal end of the insertion part forms a second part of the detection object, the tube sheath in an original state can assist the endoscope body to enter the renal pelvis through the operation channel, and the tube sheath in the original state is usually in a straight state, so that the insertion part can be ensured to be stretched in place, and the insertion part can be prevented from being bent randomly in the insertion process to abut against human tissues to cause secondary injury;

secondly, after the distal end of the insertion part is inserted into the renal pelvis, the passive bending section of the tube sheath can be bent along with the bending of the active bending section of the endoscope body, so that the orientation of the distal end of the tube sheath is generally consistent with that of the distal end of the endoscope body, namely, the orientation of the suction channel is generally consistent with the view finding direction of the endoscope body, and in this way, the distal end of the tube sheath can also be inserted into the deep part of the renal pelvis along with the active bending section of the endoscope body, so that the crushed stones in the deep part of the renal pelvis can be accurately sucked under the visual condition, and the stone taking speed and the stone taking effect are improved; meanwhile, the liquid injection port of the nephroscope and the suction port of the suction channel can be always positioned at adjacent positions, so that good water circulation is formed at the position, close to the calculus, of the far end of the tube sheath, the phenomenon of snowstorm can be avoided, the observation visual field is clear, and the infection risk caused by increase of the injection amount can be avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below 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 creative efforts.

FIG. 1 is a schematic structural diagram of a nephroscope according to an embodiment of the present application;

FIG. 2 is an enlarged partial schematic view at A in FIG. 1;

FIG. 3 is a schematic view of a portion of FIG. 1 at B;

FIG. 4 is a schematic structural view of an insertion portion of an embodiment of the present application;

FIG. 5 is a schematic view of the inner strut according to an embodiment of the present application;

in the figure:

100-a handle portion; 200-insertion part, 210-scope, 211-active bending section, 220-sheath, 221-base section, 222-flexible section, 230-suction channel, 240-internal support.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of 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 terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application are capable of operation in sequences other than those illustrated or described herein, and that the terms "first," "second," etc. are generally used in a generic sense and do not limit the number of terms, e.g., a first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.

In the utility model, the near end and the far end are the far and near positions of the structure relative to the operation of human body in the use environment, so as to conveniently describe the position relationship between the components and facilitate understanding; the "proximal end" and the "distal end" are relative positional relationships, and are not absolute.

The nephroscope provided by the embodiment of the present application will be described in detail with reference to fig. 1 to 5 through specific embodiments and application scenarios thereof.

Referring to fig. 1, the present embodiment discloses a nephroscope, which includes a handle portion 100 and an insertion portion 200, wherein the proximal end of the insertion portion 200 is connected to the handle portion 100.

In the embodiment of the present application, the insertion portion 200 includes a scope body 210 and a sheath 220, and the sheath 220 is sleeved on the outer side of the scope body 210 and forms a suction channel 230 therebetween.

The distal end of the scope body 210 has an active bending section 211, and the distal end of the sheath 220 has a passive bending section, wherein the passive bending section of the sheath 220 maintains an original state when the passive bending section of the sheath 220 is inserted into the first portion of the test object, and the passive bending section of the sheath 220 can be bent along with the bending of the active bending section 211 when the passive bending section of the sheath 220 is inserted into the second portion of the test object.

In the embodiment of the present application, the first part of the test object refers to the surgical channel formed by the lumbar puncture hole of the test object, and the second part of the test object refers to the renal pelvis reached by the distal end of the insertion portion 200.

The inventor finds that in the process of a retrograde operation, because human tissues after puncture and opening are closed together and a hose is difficult to be directly placed into a renal pelvis, a hard tube sheath needs to be placed into the renal pelvis through the puncture and opening to form an operation channel, an endoscope needs to be placed into the renal pelvis through the operation channel, and stones are broken by using a stone breaking tool such as laser and ultrasound. However, since the orientation of the distal end of the endoscope is actively changed, the orientation of the distal end of the sheath cannot be consistent with the orientation of the distal end of the endoscope, in such a case, on one hand, the suction channel constructed by the sheath cannot be consistent with the viewing direction of the endoscope, so that it is difficult to precisely suck the crushed stone, and there are cases where the stone removal is slow and the stone removal effect is poor; on the other hand, the position between the liquid injection port at the far end of the endoscope and the suction port at the far end of the suction channel is changed relatively, so that when stones are treated, good water circulation cannot be formed at the front end of the endoscope, and the generated broken stone dust easily shields the camera shooting assembly, so that the observation visual field is not clear enough, which is commonly called as a snowstorm phenomenon.

In addition, since the hard sheath cannot be inserted into the deep part of the renal pelvis, when the calculus in the deep part of the renal pelvis is broken and sucked, the waist of the human body needs to be punctured and holed in a targeted manner for many times, which imposes a large burden on the physiology and psychology of the patient.

In the embodiment of the present application, the insertion portion of the nephroscope is an integrated structure formed by the scope body 210 and the tube sheath 220, after the lumbar portion is punctured and holed, the tube sheath 220 can assist the scope body 210 to enter the renal pelvis of the human body, and the tube sheath 220 in the original state is usually in a straight state, which not only can ensure that the insertion portion 200 is inserted in place, but also can avoid the secondary injury caused by the fact that the insertion portion 200 is bent randomly and abuts against human tissues in the insertion process.

After the distal end of the insertion portion 200 is inserted into the renal pelvis, the passive bending section of the sheath 220 can be bent along with the bending of the active bending section 211 of the scope body 210, so that the orientation of the distal end of the sheath 220 is substantially consistent with that of the distal end of the scope body 210, that is, the orientation of the suction channel 230 is kept substantially consistent with the viewing direction of the scope body 210; on one hand, the passive bending section of the tube sheath 220 can bend along with the active bending section 211 of the endoscope body 210, so that the tube sheath 220 can also be inserted into the deep part of the renal pelvis to accurately absorb the crushed stones in the deep part of the renal pelvis under visible conditions, thereby improving the stone extraction speed and optimizing the stone extraction effect; on the other hand, the liquid injection port of the scope body 210 and the suction port of the suction channel 230 can be always located at adjacent positions, so that good water circulation is formed at the position, close to the calculus, of the far end of the tube sheath 220, the phenomenon of snowstorm can be avoided, the observation visual field is clear, and the infection risk caused by the increase of the injection amount can be avoided.

Meanwhile, the number of the holes punctured in the waist of the human body can be greatly reduced by the mode, the operation time is saved, the operation risk is reduced, and the physiological burden and the psychological burden of a patient are reduced.

In the research process, the inventor also finds that if the tube sheath 220 is directly sleeved on the outer side of the endoscope body 210, the active bending section 211 abuts against the inner wall of the tube sheath 220 in the process of bending the active bending section 211, so that the distal end part of the suction channel 230 is closed, and the suction and discharge of the crushed stone are not facilitated.

Based on the above situation, in the embodiment of the present application, the insertion portion 200 further includes an inner supporting member 240, the inner supporting member 240 is disposed between the active bending section 211 and the passive bending section of the tube sheath 220, the plurality of inner supporting members 240 are distributed along the circumferential direction of the insertion portion 200, and the inner supporting member 240 can always form a gap between the outer wall of the active bending section 211 and the inner wall of the passive bending section of the tube sheath 220, so as to avoid the situation that the suction channel 230 is blocked due to the abutting connection between the two.

In a further technical solution, the inner supporting member 240 is a strip-shaped structural member, the inner supporting member 240 extends along the axial direction of the insertion portion 200, and the space occupied by the strip-shaped structural inner supporting member 240 in the suction channel 230 is small, so that the opening of the suction port at the distal end of the suction channel 230 is large, some large gravels can be sucked into the suction channel 230, and the suction capacity of the suction channel 230 to the gravels is ensured.

In an alternative embodiment, referring to fig. 3, the number of the inner supporting members 240 may be four, the four inner supporting members 240 are distributed along the circumferential direction of the insertion portion 200, and the four inner supporting members 240 can play a better limiting role in the circumferential direction of the active bending section 211, so as to prevent the active bending section 211 from bouncing within the passive bending section of the sheath 220.

In the embodiment of the present application, the plurality of inner struts 240 may be uniformly distributed along the circumferential direction of the insertion portion 200, or may be non-uniformly distributed along the circumferential direction of the insertion portion 200, as long as the scope body 210 is prevented from bouncing against the inner wall of the sheath 220, which is not limited in the embodiment of the present application. It should be noted that, in the case that the plurality of inner struts 240 are not uniformly distributed along the circumferential direction of the insertion portion 200, compared with the manner that the plurality of inner struts 240 are uniformly distributed along the circumferential direction of the insertion portion 200, the distal end of the suction channel 230 may form an opening with a larger opening size, so as to facilitate the suction and discharge of some crushed stones with larger sizes.

In the embodiment of the present invention, the inner supporting member 240 may be fixed to the outer side of the active bending section 211, or may be fixed to the inner side of the passive bending section of the sheath 220, or the inner end of the inner supporting member 240 is fixed to the active bending section 211, and the outer end of the inner supporting member 240 is fixed to the passive bending section of the sheath 220, which is not limited in the present application.

In an alternative embodiment, the outer end of the inner supporting member 240 is fixed to the inner wall of the passive bending section of the sheath 220, for example, the inner end of the inner supporting member 240 abuts against the outer wall of the active bending section 211; under such a configuration, the inner ends of the inner supporting members 240 are slidably engaged with the outer wall of the scope body 210, so as to facilitate the assembly of the scope body 210, and the scope body 210 is inserted into the region defined by the plurality of inner supporting members 240, and on the other hand, in the process of bending the active bending section 211, the abutting manner allows a certain movement margin between the scope body 210 and the tube sheath 220, thereby preventing the inner supporting members 240 from being damaged, and improving the reliability and stability of the nephroscope.

Similarly, in another alternative embodiment, the outer end of the inner support 240 abuts against the inner wall of the passive bending section of the sheath 220, and the inner end of the inner support 240 is fixed to the outer wall of the active bending section 211.

In the present embodiment, the sheath 220 includes a base pipe section 221 and a flexible pipe section 222, the base pipe section 221 having a stiffness greater than the flexible pipe section 222, the flexible pipe section 222 constituting a passive bending section of the sheath 220. It should be understood that the flexible tube segment 222 is less rigid and is easily bendable following the active bending segment 211 relative to the base tube segment 221, and does not represent that the flexible tube segment 222 is bendable at will, and that the flexible tube segment 222 should have a certain rigidity to ensure that it remains in its original state during insertion into the body.

It should be noted that in the embodiment of the present application, the flexible pipe section 222 can be shaped (maintained in an initial state) by the nature of the material itself, and can be passively bent after being stressed beyond a preset value, for example, by being integrally formed with the base pipe section 221 by the flexible material; shaping can also be achieved by a special mechanical structure and passive bending after a force exceeding a preset value, for example, a structure similar to a spiral or gooseneck can be used to construct the flexible pipe section 222.

In further technical scheme, the proximal end of sheath 220 is provided with suction nozzle 223 and pressure measurement nozzle 224 that are linked together with suction channel 230, suction nozzle 223 is used for connecting negative pressure mechanism for absorb the rubble of renal pelvis department, pressure measurement nozzle 224 is used for connecting pressure measurement device, the pressure measurement device that pressure measurement nozzle 224 connects can the real-time detection pressure in the depth of renal pelvis, make things convenient for medical personnel accurate judgement and control operation time, avoid the renal pelvis internal pressure to increase the time overlength and initiate uremia pyemia.

In an alternative embodiment, the distal end of active bending section 211 is flush with the distal end wall of sheath 220.

In another alternative embodiment, the distal end of the active bending section 211 protrudes from the distal end wall of the sheath 220, so that the active bending section 211 can be prevented from retracting relative to the sheath 220 due to bending, the distal end of the scope body 210 can be close to the surgical site, and the precision of the surgical operation can be improved.

In a further technical solution, referring to fig. 5, the inner support 240 has a guiding portion 241 protruding from the distal end wall of the sheath 220, and the distal end of the guiding portion 241 has a guiding surface 241a inclined with respect to the axial direction of the insertion portion 200, so that during the insertion portion 200 passing through the surgical channel, the closed human tissue is easily separated due to the existence of the guiding surface 241a, and the detection object is not easily damaged secondarily.

It should be noted that, in this document, 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 phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. A nephroscope, characterized by comprising a handle portion (100) and an insertion portion (200) connecting the handle portion (100); wherein:

the insertion part (200) comprises a scope body (210) and a tube sheath (220), wherein the tube sheath (220) is sleeved on the outer side of the scope body (210) and forms a suction channel (230) between the tube sheath and the tube sheath;

the distal end of the endoscope body (210) is provided with an active bending section (211), the distal end of the tube sheath (220) is provided with a passive bending section, when the passive bending section of the tube sheath (220) is inserted into a first part of a detection object, the passive bending section of the tube sheath (220) keeps an original state, and when the passive bending section of the tube sheath (220) is inserted into a second part of the detection object, the passive bending section of the tube sheath (220) can be bent along with the bending of the active bending section (211).

2. The nephroscope according to claim 1, characterized in that the insertion portion (200) further comprises an inner strut (240), the inner strut (240) being provided between the active bending section (211) and the passive bending section of the tube sheath (220).

3. The nephroscope according to claim 2, characterized in that the inner support member (240) is a strip-shaped structure, the inner support member (240) is disposed along the axial extension of the insertion portion (200), and a plurality of the inner support members (240) are distributed along the circumferential direction of the insertion portion (200).

4. The nephroscope according to claim 3, characterized in that a plurality of the inner struts (240) are non-uniformly distributed along the circumference of the insertion portion (200).

5. The nephroscope according to claim 2, characterized in that the outer end of the inner strut (240) is fixed to the inner wall of the passive bending section of the tube sheath (220), the inner end of the inner strut (240) is in abutment with the outer wall of the active bending section (211); or the outer end of the inner support piece (240) is abutted against the inner wall of the passive bending section of the tube sheath (220), and the inner end of the inner support piece (240) is fixed on the outer wall of the active bending section (211).

6. The nephroscope according to any of claims 2 to 5, characterized in that the inner support member (240) has a guide portion (241) protruding from the distal end wall of the sheath (220), and the guide portion (241) has a guide surface (241 a) disposed obliquely to the axis of the insertion portion (200).

7. The nephroscope according to any of claims 1-5, characterized in that the sheath (220) comprises a base tube section (221) and a flexible tube section (222), the base tube section (221) having a stiffness greater than a stiffness of the flexible tube section (222), the flexible tube section (222) constituting a passive bending section of the sheath (220).

8. The nephroscope according to claim 1, characterized in that the proximal end of the tube sheath (220) is provided with a suction nozzle (223) and a pressure nozzle (224) communicating with the suction channel (230).

9. The nephroscope according to claim 1, characterized in that the distal end of the active bending section (211) is flush with the distal end wall of the sheath (220).

10. The nephroscope according to claim 1, characterized in that part of the active bending section (211) protrudes from the distal end wall of the sheath (220).