CN217592839U

CN217592839U - Choledochoscope sleeve

Info

Publication number: CN217592839U
Application number: CN202220775150.XU
Authority: CN
Inventors: 俞海蛟; 李洁
Original assignee: Xiangshan First People's Hospital Medical And Health Group
Current assignee: Ningbo Jingwei Medical Technology Co ltd
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2022-10-18
Anticipated expiration: 2032-04-01

Abstract

The application discloses a choledochoscope sleeve, which comprises a sleeve body and a sealing assembly; a channel for placing the choledochoscope is formed in the sleeve body; the sealing piece is arranged between the sleeve body and the choledochoscope, so that the choledochoscope always forms sealing with the passage when moving and rotating in the passage. The choledochoscope sleeve is simple in structure, convenient to use and good in sealing performance, a choledochoscope can conveniently enter a common bile duct, operation of the choledochoscope is not affected, operation is facilitated, and operation time is saved.

Description

Choledochoscope sleeve

Technical Field

The application relates to the field of medical equipment, in particular to a choledochoscope sleeve.

Background

Currently, a choledochoscope is a medical optical endoscope designed for endoscopy and endoscopic surgery of the pancreaticobiliary duct; the external form is fine, the visual field is clear, the insertion is safe, vivid images can be displayed, even slight changes can be made, and the diagnosis and treatment of biliary tract diseases are safer, simpler and more accurate.

In the prior art, during an abdominal operation, a choledochoscope needs to enter an abdominal cavity through a puncture cannula and then enter a common bile duct, wherein the choledochoscope enters the abdominal cavity and is away from the common bile duct by a certain distance. Because the choledochoscope is a soft choledochoscope, under the blocking of human tissues and organs in the abdominal cavity, certain difficulty exists when the choledochoscope enters the common bile duct from the abdominal cavity, and particularly when the liver of a patient is large, an assistant is needed to keep the liver away.

Disclosure of Invention

An object of the application provides a simple structure, convenient to use, the leakproofness is good, and the choledochoscope entering common bile duct of being convenient for does not influence the operation of choledochoscope, is favorable to the operation, saves operation time's choledochoscope sleeve pipe.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a choledochoscope sleeve comprises a sleeve body and a sealing component; a channel for placing a choledochoscope is formed in the sleeve body; the sealing element is arranged between the sleeve body and the choledochoscope, so that the choledochoscope always forms sealing with the passage when moving and rotating in the passage.

Preferably, the sealing assembly comprises a sealing plug of an annular structure, the sealing plug is detachably arranged at one end of the sleeve body, and the sealing plug and the sleeve body form a seal; the choledochoscope is slidably and rotatably connected to the inner annular surface of the sealing plug, and sealing is formed between the outer wall of the choledochoscope and the inner annular surface of the sealing plug. The advantages are that: after the sealing element and the sleeve body are disassembled and separated, the sleeve body and the sealing plug are convenient to clean and sterilize. When the sealing element is connected with the sleeve body, the sealing element forms a seal with the sleeve body, and when the choledochoscope is slidably and rotatably connected with the inner annular surface of the sealing plug, the choledochoscope outer wall forms a seal with the inner annular surface of the sealing plug; this allows the choledochoscope to always form a seal with the tunnel as it moves and rotates within the tunnel.

Preferably, the sealing assembly further comprises a housing and a pushing member; the shell is arranged at one end of the sleeve body, a through hole for the choledochoscope to enter the channel is formed in the shell, and the inner diameter of the through hole is larger than that of the channel; the sealing plug can be axially and slidably arranged in the through hole, and sealing is formed between the outer annular surface of the sealing plug and the inner wall of the through hole; the pushing piece is in threaded connection with the through hole, and when the pushing piece is rotated, the sealing plug is forced to deform along the radial direction. The advantages are that: the sealing plug is made of medical rubber and has certain deformation capacity; when the choledochoscope is adjusted to a proper operation position, the axial size of the sealing plug is gradually reduced and the radial size of the sealing plug is gradually increased by rotating the pushing piece and enabling the pushing piece to move towards the direction close to the sealing plug, and then the choledochoscope is fixed in the choledochoscope sleeve; this prevents the choledochoscope from moving within the choledochoscope cannula during surgery through the choledochoscope. When the pushing piece is rotated and is made to move towards the direction deviating from the sealing plug, the axial size of the sealing plug is gradually increased, and the radial size of the sealing plug is gradually reduced; this enables the choledochoscope to slide and rotate within the sealing plug, facilitating the position adjustment of the choledochoscope. When the pushing piece is rotated and separated from the through hole, the sealing plug can be taken out of the through hole, so that the cholangioscope sleeve can be cleaned and disinfected conveniently. In addition, one end of the outer ring surface of the pushing piece, which deviates from the through hole, is provided with an anti-slip block, so that the pushing piece can rotate conveniently.

Preferably, a first conical surface structure is arranged at one end, close to the sleeve body, of the side wall of the through hole, and a second conical surface structure is arranged at one end, close to the sleeve body, of the outer annular surface of the sealing plug, and abuts against the first conical surface structure. The advantages are that: when the pushing piece is rotated to push the second conical surface structure on the sealing plug to contact with the first conical surface structure, the first conical surface structure can radially extrude the second conical surface structure, so that the sealing plug is favorably deformed radially and inwards more easily, the sealing property between the sealing plug and the choledochoscope is improved, the sealing plug and the shell are favorably sealed, and the sealing property between the sealing plug and the shell (namely, the through hole) is improved.

Preferably, the inner diameter of the first conical surface structure near one end of the sleeve body is equal to the inner diameter of the channel. The advantages are that: the choledochoscope passes through the through-hole inserts the in-process of passageway, first conical surface structure can play the guide effect, is convenient for the choledochoscope gets into the passageway.

Preferably, the choledochoscope cannula further comprises a handheld portion, and the handheld portion is arranged between the cannula body and the shell. The advantages are that: the handheld part is convenient to use and operate, for example, when the choledochoscope cannula is used, the index finger and the middle finger clamp the cannula body, and the thumb presses on the handheld part, so that a clamping area for clamping the handheld part is formed between the thumb and the index finger and the middle finger.

Preferably, an annular bulge is arranged on the inner ring surface of the sealing plug along the circumferential direction of the choledochoscope. The advantages are that: the annular bulges are provided with a plurality of annular bulges, so that the sealing performance between the sealing plug and the choledochoscope is guaranteed, the contact area between the sealing plug and the choledochoscope is reduced, the friction force is reduced, and the choledochoscope can slide and rotate in the sealing plug conveniently.

Preferably, one end of the inner ring surface of the sealing plug, which deviates from the sleeve body, is provided with a chamfer or a fillet. The advantages are that: the choledochoscope can conveniently enter the sealing plug.

Preferably, the diameter of the sleeve body is 5mm to 9mm. The advantages are that: under the condition that the inner diameter and the material of the sleeve body are the same, the larger the diameter of the sleeve body is, the thicker the wall thickness of the sleeve body is, so that the sleeve body is inconvenient to bend, the flexibility is influenced, and the difficulty of the sleeve body entering an abdominal cavity is higher; when the diameter of the sleeve body is larger than 9mm, the flexibility of the sleeve body is low, and the difficulty of entering the abdominal cavity is high; the smaller the diameter of the sleeve body is, the thinner the wall thickness of the sleeve body is, so that the hardness and the supporting function of the sleeve body are smaller; when the diameter of the sleeve body is less than 5mm, the hardness and the supporting function of the sleeve body are small. When the diameter of the sleeve body is 7mm, the comprehensive performance is optimal, and the cost performance is highest.

Preferably, the length of the sleeve body is 15cm-20cm. The advantages are that: when the length of the sleeve body is less than 15cm, the sleeve body does not have enough length to support the choledochoscope to enter a common bile duct; when the length of the sleeve body is larger than 20cm, the sleeve body supports the choledochoscope to enter the common bile duct, the sleeve body can be arranged outside a human body by a certain length, and the longer the length is, the more the sleeve body is not beneficial to operation. When the length of the sleeve body is 18cm, the comprehensive performance is optimal, and the cost performance is highest.

Compared with the prior art, the beneficial effect of this application lies in: when the choledochoscope is used, the choledochoscope is placed into the channel, and the choledochoscope enters the common bile duct by operating the sleeve body; compared with the choledochoscope (soft endoscope) which is directly operated, the sleeve body has certain hardness, so that human tissue organs (such as liver) can be kept open in the process that the choledochoscope moves from the abdominal cavity to the common bile duct, the choledochoscope is guaranteed not to bend in the advancing process, the choledochoscope can accurately enter the common bile duct, the operation is simple and convenient, assistant auxiliary operation is not needed, and the operation time is saved; treat behind the choledochoscope entering common bile duct, can remove or rotate the choledochoscope is right the flexible operation is carried out to the head end of choledochoscope, simultaneously, under seal assembly's effect, the choledochoscope can always with form sealedly between the sleeve pipe body, can avoid abdominal cavity gas and liquid blowout abdominal cavity. Therefore, the choledochoscope sleeve is simple in structure, convenient to use and good in sealing performance, a choledochoscope can conveniently enter a common bile duct, operation of the choledochoscope is not affected, operation is facilitated, and operation time is saved.

Drawings

Fig. 1 is a perspective view of a cholangioscope cannula provided by the present application.

Fig. 2 is an exploded view of a cholangioscope cannula provided by the present application.

Fig. 3 is a front view of a choledochoscope cannula provided by the present application.

Fig. 4 is a cross-sectional view taken along a in fig. 3 as provided by the present application.

Fig. 5 is a front view of an exploded view of a cholangioscope cannula provided by the present application.

Fig. 6 is a cross-sectional view taken along line B of fig. 5 as provided herein.

In the figure: 1. a sleeve body; 11. a channel; 2. a seal assembly; 21. a sealing plug; 211. an annular projection; 22. a housing; 221. a through hole; 23. a pusher member; 3. a hand-held portion.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It should be noted that 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.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1-6, one embodiment of the present application provides a choledochoscope cannula, comprising a cannula body 1 and a seal assembly 2; a channel 11 for placing a choledochoscope is formed inside the sleeve body 1; the sealing element is arranged between the sleeve body 1 and the choledochoscope, so that the choledochoscope always forms sealing with the channel 11 when moving and rotating in the channel 11. When in use, the choledochoscope is placed into the channel 11, and the choledochoscope enters the common bile duct by operating the sleeve body 1; compared with a choledochoscope (soft endoscope) which is directly operated, the sleeve body 1 (for example, a pipeline made of medical polyvinyl chloride, medical polyethylene and the like) has certain hardness, so that a human tissue organ (such as a liver) can be blocked in the process that the choledochoscope moves from the abdominal cavity to the common bile duct, the choledochoscope can be prevented from being bent in the advancing process, the choledochoscope can accurately enter the common bile duct, the operation is simple and convenient, assistant operation is not needed, and the operation time is saved; after the choledochoscope enters the common bile duct, the choledochoscope can be moved or rotated to flexibly operate the head end of the choledochoscope, and meanwhile, under the action of the sealing assembly 2, the choledochoscope can always form sealing with the sleeve body 1, so that gas and liquid in the abdominal cavity can be prevented from being sprayed out of the abdominal cavity. Therefore, the choledochoscope sleeve is simple in structure, convenient to use and good in sealing performance, a choledochoscope can conveniently enter a common bile duct, operation of the choledochoscope is not affected, operation is facilitated, and operation time is saved.

Referring to fig. 1 to 6, in some embodiments of the present application, the sealing assembly 2 includes a sealing plug 21 having a ring structure, the sealing plug 21 is detachably disposed at one end of the casing body 1, and the sealing plug 21 forms a seal with the casing body 1; the choledochoscope is slidably and rotatably connected to the inner annular surface of the sealing plug 21, and a seal is formed between the outer wall of the choledochoscope and the inner annular surface of the sealing plug 21. After the sealing element is detached from the sleeve body 1, the sleeve body 1 and the sealing plug 21 can be cleaned and disinfected conveniently. When the sealing element is connected with the sleeve body 1, a seal is formed between the sealing element and the sleeve body 1, and when the choledochoscope is slidably and rotatably connected with the inner annular surface of the sealing plug 21, a seal is formed between the outer wall of the choledochoscope and the inner annular surface of the sealing plug 21; this allows the choledochoscope to always form a seal with the passage 11 as it moves and rotates within the passage 11.

Referring to fig. 1-6, in some embodiments of the present application, the seal assembly 2 further includes a housing 22 and a pusher 23; the shell 22 is arranged at one end of the cannula body 1, a through hole 221 for the choledochoscope to enter the channel 11 is arranged on the shell 22, and the inner diameter of the through hole 221 is larger than that of the channel 11; the sealing plug 21 is axially slidably arranged in the through hole 221, and a seal is formed between the outer annular surface of the sealing plug 21 and the inner wall of the through hole 221; the pushing member 23 is threadedly engaged with the through hole 221 so that the plug 21 is forced to deform in the radial direction when the pushing member 23 is rotated. The sealing plug 21 is made of medical rubber and has certain deformation capacity; when the choledochoscope is adjusted to a proper operation position, the axial size of the sealing plug 21 is gradually reduced and the radial size of the sealing plug 21 is gradually increased by rotating the pushing piece 23 and enabling the pushing piece 23 to move towards the direction close to the sealing plug 21, and then the choledochoscope is fixed in a choledochoscope sleeve; this prevents the cholangioscope from moving within the cholangioscope cannula when performing an operation with the cholangioscope. When the pushing member 23 is rotated and the pushing member 23 is moved in a direction deviating from the sealing plug 21, the axial size of the sealing plug 21 is gradually increased, and the radial size of the sealing plug 21 is gradually decreased; this allows the choledochoscope to slide and rotate within the sealing plug 21, facilitating adjustment of the position of the choledochoscope. When the pushing piece 23 is rotated and the pushing piece 23 is separated from the through hole 221, the sealing plug 21 can be taken out from the through hole 221, so that the cleaning and disinfection of the choledochoscope sleeve are facilitated. In addition, an anti-slip block is arranged at one end of the outer annular surface of the pushing piece 23, which is deviated from the through hole 221, so that the pushing piece 23 can rotate conveniently.

Referring to fig. 4 and 6, in some embodiments of the present application, a first tapered structure is disposed at an end of a sidewall of the through hole 221 close to the sleeve body 1, and a second tapered structure is disposed at an end of an outer annular surface of the sealing plug 21 close to the sleeve body 1, where the second tapered structure abuts against the first tapered structure. When the pushing member 23 is rotated to push the second conical surface structure on the sealing plug 21 to contact with the first conical surface structure, the first conical surface structure radially extrudes the second conical surface structure, which is not only beneficial to the sealing plug 21 to deform radially and inwardly more easily, so as to improve the sealing property between the sealing plug 21 and the choledochoscope, but also beneficial to the sealing between the sealing plug 21 and the housing 22 to form a seal, so as to improve the sealing property between the sealing plug 21 and the housing 22 (i.e. the through hole 221).

Preferably, the inner diameter of the first conical surface structure near the end of the cannula body 1 is equal to the inner diameter of the channel 11. In the process that the choledochoscope is inserted into the channel 11 through the through hole 221, the first conical surface structure can play a role in guiding, and the choledochoscope can conveniently enter the channel 11.

Referring to fig. 1, in some embodiments of the present application, the choledochoscope cannula further includes a hand-held portion 3, the hand-held portion 3 being disposed between the cannula body 1 and the housing 22. The use operation is facilitated through the handheld portion 3, for example, when the choledochoscope cannula is used, the index finger and the middle finger clamp the cannula body 1, and the thumb presses on the handheld portion 3, so that a clamping area for clamping the handheld portion 3 is formed between the thumb and the index finger and the middle finger.

Referring to fig. 4 and 6, in some embodiments of the present application, the inner annular surface of the sealing plug 21 is provided with an annular protrusion 211 along the circumferential direction of the choledochoscope. The annular protrusions 211 are provided with a plurality of protrusions, so that the sealing performance between the sealing plug 21 and the choledochoscope is guaranteed, the contact area between the sealing plug 21 and the choledochoscope is reduced, the friction force is reduced, and the choledochoscope can slide and rotate in the sealing plug 21 conveniently.

Referring to fig. 4 and 6, in some embodiments of the present application, the end of the inner annular surface of the sealing plug 21 that is offset from the sleeve body 1 is chamfered or rounded. So that the choledochoscope can enter the sealing plug 21 conveniently.

Referring to fig. 1-2, in some embodiments of the present application, the cannula body 1 has a diameter of 5mm-9mm. Under the condition that the inner diameter and the material of the cannula body 1 are the same, the larger the diameter of the cannula body 1 is, the thicker the wall thickness of the cannula body 1 is, so that the cannula body 1 is inconvenient to bend, the flexibility is influenced, and the difficulty of the cannula body 1 entering the abdominal cavity is higher; when the diameter of the cannula body 1 is larger than 9mm, the flexibility of the cannula body 1 is low, and the difficulty of entering the abdominal cavity is high; the smaller the diameter of the sleeve body 1 is, the thinner the wall thickness of the sleeve body 1 is, so that the hardness and the supporting function of the sleeve body 1 are smaller; when the diameter of the sleeve body 1 is less than 5mm, the hardness of the sleeve body 1 and the supporting function are small. When the diameter of the sleeve body 1 is 7mm, the comprehensive performance is optimal, and the cost performance is highest.

Referring to fig. 1-2, in some embodiments of the present application, the cannula body 1 has a length of 15cm to 20cm. When the length of the cannula body 1 is less than 15cm, the cannula body 1 does not have enough length to support the choledochoscope to enter the common bile duct; when the length of the sleeve body 1 is larger than 20cm, after the sleeve body 1 supports the choledochoscope to enter the common bile duct, the sleeve body 1 can be arranged outside a human body by a certain length, and the longer the length is, the more the sleeve body is not beneficial to operation. When the length of the sleeve body 1 is 18cm, the comprehensive performance is optimal, and the cost performance is highest.

To sum up, this cholangioscope sleeve pipe's simple structure, convenient to use, the leakproofness is good, and the cholangioscope of being convenient for gets into common bile duct, does not influence the operation of cholangioscope, is favorable to the operation, saves the operation time.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A choledochoscope cannula is characterized by comprising a cannula body and a sealing component; a channel for placing a choledochoscope is formed in the sleeve body; the sealing assembly is arranged between the sleeve body and the choledochoscope, so that the choledochoscope always forms sealing with the channel when moving and rotating in the channel;

the sealing assembly comprises a sealing plug with an annular structure, the sealing plug is detachably arranged at one end of the sleeve body, and sealing is formed between the sealing plug and the sleeve body; the choledochoscope is slidably and rotatably connected to the inner annular surface of the sealing plug, and sealing is formed between the outer wall of the choledochoscope and the inner annular surface of the sealing plug.

2. The choledochoscope cannula of claim 1, wherein the seal assembly further comprises a housing and a pusher; the shell is arranged at one end of the sleeve body, a through hole for the choledochoscope to enter the channel is formed in the shell, and the inner diameter of the through hole is larger than that of the channel; the sealing plug can be axially and slidably arranged in the through hole, and sealing is formed between the outer ring surface of the sealing plug and the inner wall of the through hole; the pushing piece is in threaded connection with the through hole, and when the pushing piece is rotated, the sealing plug is forced to deform along the radial direction.

3. The cholangioscope cannula of claim 2, wherein one end of the side wall of the through hole close to the cannula body is provided with a first conical surface structure, one end of the outer annular surface of the sealing plug close to the cannula body is provided with a second conical surface structure, and the second conical surface structure abuts against the first conical surface structure.

4. The cholangioscope cannula of claim 3, wherein the first conical surface structure has an inner diameter near one end of the cannula body equal to the inner diameter of the passageway.

5. The choledochoscope cannula of claim 2, further comprising a hand-held portion disposed between the cannula body and the housing.

6. The choledochoscope cannula of claim 1, wherein the inner annular surface of the sealing plug is provided with an annular protrusion along the circumference of the choledochoscope.

7. The cholangioscope cannula of claim 1, wherein one end of the inner annular surface of the sealing plug, which deviates from the cannula body, is provided with a chamfer or fillet.

8. The cholangioscope cannula of claim 1, wherein the cannula body has a diameter of 5mm to 9mm.

9. The cholangioscope cannula of claim 1, wherein the length of the cannula body is 15cm-20cm.