CN115399713A

CN115399713A - Magnetic control capsule endoscope traction cap and kit with spraying function

Info

Publication number: CN115399713A
Application number: CN202210571745.8A
Authority: CN
Inventors: 田原; 饶小龙; 戎龙
Original assignee: Peking University First Hospital
Current assignee: Peking University First Hospital
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-11-29
Anticipated expiration: 2042-05-24
Also published as: CN115399713B

Abstract

The invention relates to the technical field of gastrointestinal examination instruments, in particular to a magnetic control capsule endoscope traction cap with a spraying function and a kit. The magnetic control capsule endoscope traction cap comprises: the separating piece is provided with a concave cavity suitable for being sleeved with the end part of the magnetic control capsule endoscope in an interference manner; the first traction tube is fixed on the separating piece at one end and communicated with the cavity, and the other end extends towards the opposite direction of the opening of the cavity and is suitable for being led out of the body when the esophagus is detected; a sealed cavity is formed between the spraying piece and the separating piece, and a spray hole is formed in the cavity wall of the sealed cavity; and one end of the second traction pipe is fixed on the spraying piece and communicated with the sealing cavity, the other end of the second traction pipe extends towards the direction far away from the separating piece, and liquid is injected into the sealing cavity through the second traction pipe and is sprayed out from the spray hole. The invention can fully observe the esophagus by repeatedly observing the esophagus part and spraying detection liquid such as iodine solution and the like, more clearly distinguish early neoplastic lesions of the esophagus and greatly reduce the missed diagnosis of the esophageal lesions.

Description

Magnetic control capsule endoscope traction cap and kit with spraying function

Technical Field

The invention relates to the technical field of gastrointestinal examination instruments, in particular to a magnetic control capsule endoscope traction cap with a spraying function and a kit.

Background

The capsule endoscopy is a novel gastrointestinal examination apparatus in recent years, belongs to a first-line diagnosis mode of gastrointestinal diseases such as small intestine and the like by adopting capsule endoscopy examination, and is a preferred scheme for patients with gastrointestinal hemorrhage of unknown reasons. The magnetic control capsule endoscope controls the motion track of the capsule endoscope through a magnetic field on the basis of the capsule endoscope, so that the capsule endoscope becomes an active control gastrointestinal tract capsule robot, increases an observable range on the basis of a common capsule endoscope, and extends to the whole digestive tract of esophagus, stomach, small intestine and colon from initial local observation. The magnetic control capsule endoscope is widely applied due to the advantages of small size, disposable use of instruments, avoidance of the risk of cross infection of the conventional endoscope, no pain, no wound, comfort and the like of a subject in the examination process.

The time from the entrance to the stomach of the existing magnetic control capsule endoscope in a normal state does not exceed 1 second, and the photographing frequency of the common capsule endoscope is 2-4 frames/second, so that only 2-4 esophagus detection images can be seen in the swallowing state of a patient. This results in insufficient observation of the esophagus and easy missed diagnosis of esophageal lesion in the existing magnetically controlled capsule endoscopes. In addition, early esophageal tumors are often hidden, sometimes only local mucosal hyperemia or mucosal roughness, and are very susceptible to missed diagnosis under simple endoscopic observation.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects that the observation of the magnetic control capsule endoscope on the esophagus is insufficient, and particularly the early neoplastic lesion of the esophagus is difficult to distinguish in the prior art, so that the magnetic control capsule endoscope traction cap and the magnetic control capsule endoscope traction kit with the spraying function are provided.

The invention provides a magnetic control capsule endoscope traction cap, which comprises:

the separating piece is provided with a concave cavity suitable for being sleeved with the end part of the magnetic control capsule endoscope in an interference manner;

the first traction tube is fixed on the separating piece at one end and communicated with the cavity, the other end extends towards the opposite direction of the opening of the cavity and is suitable for being led out of the body when the esophagus is detected, and the first traction tube injects medium into the cavity to pressurize so as to separate the separating piece;

the spraying piece is fixed on one side, away from the concave cavity, of the separating piece, a sealed cavity is formed between the spraying piece and the separating piece, a spraying hole is formed in the cavity wall of the sealed cavity, and the first traction pipe penetrates through the sealed cavity in a sealed mode;

and one end of the second traction tube is fixed on the spraying piece and communicated with the sealing cavity, the other end of the second traction tube extends towards the direction far away from the separating piece and is suitable for being led out of the body when the esophagus is detected, and liquid is injected into the sealing cavity through the second traction tube and is sprayed out from the spray hole.

Optionally, the injection hole is disposed at a position of a sidewall of the sealed cavity.

Optionally, the first traction tube comprises:

one end of the connecting pipe is fixed on the separating piece and is communicated with the concave cavity, the other end of the connecting pipe extends towards the opposite direction of the opening of the concave cavity, and the connecting pipe penetrates through the sealing cavity in a sealing mode;

an extension pipe hermetically connected with the connection pipe;

the length of the extension pipe is greater than that of the connection pipe.

Optionally, the connecting pipe and the separating member are integrally formed, and the extension pipe is fixedly connected with the connecting pipe.

Optionally, a tubular connecting portion is integrally formed on the spraying member, the connecting portion extends in a direction away from the separating member, the connecting portion is communicated with the sealing cavity, the second traction tube is connected with the connecting portion in a sealing manner, and liquid is injected into the sealing cavity through the second traction tube and the connecting portion and is sprayed out from the spraying hole.

Optionally, the spraying part is of a barrel-shaped structure, an annular step is arranged on the outer edge of one end, connected with the spraying part, of the separating part, and the opening end of the spraying part is sleeved on the annular step in an interference manner.

Optionally, the separating member is a first barrel member, an inner cavity of the first barrel member forms the cavity, and the first traction tube is fixed at the bottom of the first barrel member; the spraying part is a second barrel part, the inner cavity of the second barrel part and the barrel bottom of the first barrel part enclose the sealing cavity, and the second traction pipe is fixed at the barrel bottom of the second barrel part.

Optionally, the end of the first traction tube adapted to be drawn out of the body when detecting the esophagus and/or the end of the second traction tube adapted to be drawn out of the body when detecting the esophagus are provided with an injector connection.

The invention provides a magnetic control capsule endoscope kit, which comprises:

the magnetic control capsule endoscope traction cap;

one end of the magnetic control capsule endoscope is sleeved in the concave cavity in an interference manner.

The technical scheme of the invention has the following advantages:

1. the invention provides a magnetic control capsule endoscope traction cap which comprises a separating piece and a first traction tube, wherein one end of a magnetic control capsule endoscope is sleeved in a cavity of the separating piece in an interference manner when the magnetic control capsule endoscope traction cap is used and moves along with the separating piece, a medium can be injected into a sealing area formed by the magnetic control capsule endoscope and the cavity through the first traction tube, and the magnetic control capsule endoscope can be ejected out when the pressure of the medium reaches a certain value, so that the magnetic control capsule endoscope is separated from the separating piece; the spraying device further comprises a spraying part and a second traction pipe, a sealing cavity is formed between the spraying part and the separating part, the cavity wall of the sealing cavity is provided with spray holes, and when the spraying device is used, injection liquid in the sealing cavity can be sprayed out of the spray holes through the second traction pipe. The spraying piece is matched with the separating piece, after a patient swallows the capsule, the capsule can be controlled by the first traction tube to move up and down to repeatedly observe the esophagus, when the patient encounters a suspected tumor part, detection liquid such as iodine solution and the like is injected into the sealing cavity through the second traction tube, the liquid is sprayed to the suspected tumor part of the esophagus through the spray hole, because glycogen is contained in squamous epithelial cells of the esophagus, the glycogen is in brown coloring reaction after encountering iodine, normal esophageal mucosa is dyed into tan after the iodine solution is sprayed, and a light-colored area is presented after the glycogen of tumor cells is absent and is combined with the iodine solution, so that the tumor part can be displayed more clearly. The invention can fully observe the esophagus by repeatedly observing the esophagus part and spraying detection liquid such as iodine solution and the like, more clearly distinguish early neoplastic lesions of the esophagus and greatly reduce the missed diagnosis of the esophageal lesions. In addition, the spraying piece and the separating piece are mutually independent in function, the concave cavity is not communicated with the sealing cavity, and the capsule endoscope moves integrally in structure, so that redundant iodine solution cannot be injected into the stomach when the capsule endoscope is injected and separated after entering the stomach, and the separating piece and the spraying piece can be taken out simultaneously, so that the capsule endoscope is more convenient to operate and higher in feasibility.

2. The first traction tube comprises a connecting tube and an extension tube, the length of the extension tube is larger than that of the connecting tube, and the connecting tube can penetrate through the sealed cavity during specific manufacturing.

3. According to the magnetic control capsule endoscope traction cap provided by the invention, the connecting pipe is integrally formed on the separating piece, the separating piece and the connecting pipe can be processed simultaneously by adopting injection molding or other methods, the processing is more convenient, and meanwhile, the sealing performance between the connecting pipe and the separating piece is favorably ensured, so that a sealing channel is formed between the first traction pipe and the concave cavity. In addition, compared with the scheme of directly connecting the first traction pipe to the separating part, the extension pipe and the connecting pipe are connected between the two pipes, and connection is more convenient.

4. According to the magnetic control capsule endoscope traction cap provided by the invention, the spraying piece is integrally formed with the tubular connecting part, the second traction tube is in sealing connection with the connecting part, the second traction tube, the connecting part and the sealing cavity form the sealing channel together, and compared with the scheme of directly connecting the second traction tube to the spraying piece, the second traction tube and the connecting part realize the connection between the two tubes, and the connection is more convenient.

5. The magnetic control capsule endoscope traction cap provided by the invention has the advantages that the spraying piece is of a barrel-shaped structure, the separating piece is provided with the annular step, and the opening end of the spraying piece is in interference fit with the annular step. On the one hand, on the premise of ensuring the sealing property, the assembly is simpler; on the other hand, the appearance of the whole structure is more tidy, and swallowing is facilitated.

6. According to the magnetic control capsule endoscope traction cap provided by the invention, the injector connecting part is arranged at the end part of the first traction tube and/or the second traction hanger, so that the connection with an injector during detection is facilitated, and the operation is more convenient.

7. The kit provided by the invention has the magnetic control capsule endoscope traction cap, so that the kit has any one of the advantages.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a drag cap in an embodiment of the present invention;

FIG. 2 is an exploded view of a drag cap in an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a pulling cap in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of a separator according to an embodiment of the invention;

FIG. 5 is a schematic view of a spray member according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a traction tube in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a kit according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a kit according to an embodiment of the present invention;

FIG. 9 is a schematic view of the media orientation of the cartridge configuration of FIG. 8 in a separated state;

FIG. 10 is a schematic view of the direction of the medium in a spraying state in the structure of the kit shown in FIG. 8.

Description of reference numerals:

1. a separating member; 11. a concave cavity; 12. an annular step; 2. a first traction tube; 21. a connecting pipe; 22. an extension pipe; 3. a spraying member; 31. a connecting portion; 4. sealing the cavity; 41. spraying a hole; 5. a second traction tube; 6. an injector connection section; 7. provided is a magnetic control capsule endoscope.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The specific embodiment of the magnetically controlled capsule endoscope traction cap shown in fig. 1-3 comprises:

the separating piece 1 is provided with a concave cavity 11 suitable for being sleeved at the end part of the magnetically controlled capsule endoscope 7 in an interference manner;

the first traction tube 2 is fixed on the separating piece 1 at one end and communicated with the cavity 11, the other end extends towards the opposite direction of the opening of the cavity 11 and is suitable for being led out of the body when the esophagus is detected, and the first traction tube 2 injects a medium into the cavity 11 to pressurize so as to separate the separating piece 1;

the spraying part 3 is fixed on one side, away from the concave cavity 11, of the separating part 1, a sealing cavity 4 is formed between the spraying part and the separating part 1, a spray hole 41 is formed in the cavity wall of the sealing cavity 4, and the first traction pipe 2 penetrates through the sealing cavity 4 in a sealing mode;

and one end of the second traction tube 5 is fixed on the spraying piece 3 and is communicated with the sealed cavity 4, the other end of the second traction tube extends to the direction far away from the separating piece 1 and is suitable for being led out of the body when the esophagus is detected, and liquid is injected into the sealed cavity 4 through the second traction tube 5 and is sprayed out from the spray hole 41.

The working principle of the separator 1 is described in detail below: one end of the magnetic control capsule endoscope 7 is sleeved in the cavity 11 in an interference mode, a sealing area can be formed between the magnetic control capsule endoscope 7 and the cavity 11 due to the structural characteristic of the interference sleeving, the magnetic control capsule endoscope 7 can move along with the separating piece 1, a medium can be injected into the sealing area through the first traction tube 2, the magnetic control capsule endoscope 7 can be ejected out when the pressure intensity of the medium reaches a certain value, and the magnetic control capsule endoscope 7 is separated from the separating piece 1. Therefore, when the esophagus is detected, the magnetic control capsule endoscope 7 can repeatedly and comprehensively detect the esophagus by pushing and pulling the first traction tube 2, and the defect that the existing magnetic control capsule endoscope 7 is insufficient in detecting the esophagus is overcome; after the esophagus detection is finished, the magnetic control capsule endoscope 7 can be separated from the traction cap by injecting a medium into the sealed area, and the traction cap is taken out, so that the follow-up examination of the stomach, the intestine and the like cannot be influenced. In addition, the size of the traction cap is matched with the magnetic control capsule endoscope 7, the size is small, the patient acceptance degree is high, and the traction cap plays an active role in comprehensive and efficient development of comfortable endoscope examination work.

The working principle of the spray element 3 is described in detail below: a sealed cavity 4 is formed between the spraying part 3 and the separating part 1, a spray hole 41 is formed in the wall of the sealed cavity 4, the second traction pipe 5 is communicated with the sealed cavity 4 and is suitable for being led out of the esophagus during detection, iodine solution and other detection liquid can be injected into the sealed cavity 4 through the second traction pipe 5, glycogen is contained in squamous epithelial cells of the esophagus, the glycogen is subjected to brown coloring reaction after encountering iodine, normal esophageal mucosa is dyed into tan after being sprayed with the iodine solution, the glycogen of tumor cells is absent and can present a light dyeing area after being combined with the iodine solution, and the tumor part can be displayed more clearly.

The spraying part 3 of the invention is matched with the separating part 1, after the patient swallows the capsule, the capsule can be controlled by the first traction tube 2 to move up and down to repeatedly observe the esophagus, when the patient encounters a suspected tumor part, detection liquid such as iodine solution and the like is injected into the sealed cavity 4 through the second traction tube 5, the liquid is sprayed to the suspected tumor part of the esophagus through the spray hole 41, and the tumor part can be displayed more clearly through the color difference between the tumor part and a normal part. The invention can fully observe the esophagus by repeatedly observing the esophagus part and spraying detection liquid such as iodine solution and the like, more clearly distinguish early neoplastic lesions of the esophagus and greatly reduce the missed diagnosis of the esophageal lesions. In addition, the spraying part 3 and the separating part 1 are mutually independent in function, the concave cavity 11 is not communicated with the sealing cavity 4, and the capsule endoscope moves integrally in structure, so that redundant iodine liquid cannot be injected into the stomach when the capsule endoscope is injected and separated after entering the stomach, and the separating part 1 and the spraying part 3 can be taken out simultaneously, so that the capsule endoscope is more convenient to operate and higher in feasibility. In addition, the invention divides the traction anchor with complex topological structure and spraying and separating functions into the separating part 1 and the spraying part 3, thereby reducing the processing difficulty and improving the processing efficiency. Because if the two are of an integrated structure, the two can only be processed by 3D printing, the cost is high, the efficiency is low, and the material cannot be generally used for medical instruments.

The specific shape of the separator 1 is not particularly limited, and may be, for example, a columnar shape as shown in fig. 4, or may be other structures such as a block shape or a special shape. The shape of the cavity 11 formed in the separating member 1 is not particularly limited, and may be, for example, a cylinder as shown in fig. 1, or a square cavity, which only needs to be adapted to the shape of the end of the magnetron capsule endoscope 7.

There is provided a preferred separator 1 construction: as shown in fig. 4, the separating member 1 is a first barrel member, the inner cavity of the first barrel member forms a concave cavity 11, and the first traction tube 2 is fixed at the bottom of the first barrel member.

The whole separating piece 1 is of a cylindrical structure, and compared with a structure with edges, the separating piece can reduce the damage to the esophagus of a patient; the concave cavity 11 is cylindrical, can be adapted to the most common magnetic control capsule endoscope 7 in the current market, and has stronger applicability.

As can be readily appreciated, the above described interference fit has two functions: firstly, the fixed connection between the magnetic control capsule endoscope 7 and the separating piece 1 can be realized, so that the integral motion is realized; secondly, the sealing between the magnetron capsule endoscope 7 and the wall of the cavity 11 can be realized, so that a sealing area is formed between the magnetron capsule endoscope 7 and the separating member 1, and a structural basis is provided for the separation of the separating member 1.

In detail, the magnetron capsule endoscope 7 can abut against the cavity bottom of the cavity 11, as shown in fig. 8, because the end of the magnetron capsule endoscope 7 is generally set to be a spherical surface, even if the end abuts against the cavity bottom, a part of space is reserved in the cavity 11 to form a sealing area, of course, even if the magnetron capsule endoscope 7 is in a standard cylindrical shape, the end surface of the magnetron capsule endoscope is completely attached to the cavity bottom of the cavity 11, because the first traction tube 2 is communicated with the cavity 11, the injected medium can directly abut against the bottom surface of the magnetron capsule endoscope 7 after coming out from the first traction tube 2, and when the pressure is large enough, the magnetron capsule endoscope 7 can be ejected; the magnetic control capsule endoscope 7 can also not be directly abutted against the cavity bottom of the concave cavity 11, a certain distance is reserved between the magnetic control capsule endoscope 7 and the cavity bottom of the concave cavity 11, a sealing area is formed between the magnetic control capsule endoscope 7 and the cavity bottom of the concave cavity 11, injected media are accumulated in the sealing area after coming out of the first traction tube 2, and the magnetic control capsule endoscope 7 is ejected out when the pressure is high enough.

It should be understood that the interference force generated by the interference fit of the magnetron capsule endoscope 7 in the cavity 11 is appropriate, and if the interference force is too large, the required pressure in the cavity 11 is large, so that the separating member 1 is easy to have large impact force when being separated, and the human body is damaged; if it is too small, the separating member 1 may be detached during the process of pushing and pulling the separating member 1.

Specifically, the fixing manner of the first traction tube 2 on the separating element 1 is not limited, and may be integrally formed with the separating element 1, or may be fixed by gluing or the like.

The relative position of the first traction pipe 2 and the separating piece 1 is not limited, and the end part of the first traction pipe 2 can be fixed at the cavity bottom of the concave cavity 11, and then a through hole is formed in the cavity bottom of the concave cavity 11 and communicated with the first traction pipe 2; the first traction tube 2 may be directly sealed to the bottom of the cavity 11 to form a part of the tube segment in the cavity 11, or may be sealed to the bottom of the cavity. Of course, when the latter is adopted, a certain distance is reserved between the magnetron capsule endoscope 7 and the cavity bottom of the concave cavity 11.

The specific structure of the first traction tube 2 is not limited, and may be a whole tube or may be composed of two parts, as shown in fig. 4.

It should be understood that the other end of the first traction tube 2 is adapted to be drawn out of the body when examining the esophagus, and is intended to limit the length of the first traction tube 2. Considering the length of the esophagus of a human body, the length of the first traction tube 2 should be not less than 40cm, and for convenience of operation, the length of the traction rope is suitably 70cm.

It is easy to understand that the first traction tube 2 is inserted into the esophagus of human body when in use, so the material thereof has corresponding requirements, firstly, the first traction tube is harmless to human body, and secondly, the first traction tube is made of flexible material to avoid damaging the esophagus, such as hollow traction rope, etc.

In detail, the medium for separation is preferably a gas, which does not have much influence on the human body. Of course, a liquid harmless to the human body such as water may be selected.

In detail, the traction cap is made of silica gel, so that the patient swallows the capsule without obvious foreign body sensation, and the examination is comfortable and easy. Of course, other flexible materials which are harmless to the human body, such as harmless rubber, are adopted, and the elasticity of the flexible materials is utilized, so that the interference sleeving of the magnetron capsule endoscope 7 in the concave cavity 11 is more favorably realized.

The specific structure of the spraying member 3 is not limited, and the spraying member may be a column, a block or a special-shaped spraying member, but no matter which structure is adopted, two points need to be satisfied: firstly, it needs to be able to be fixedly connected with the separating element 1; secondly, when fixed to the separating element 1, a sealed chamber 4 needs to be formed between the separating element 1 and the chamber.

The specific way of fixedly connecting the spraying member 3 and the separating member 1 is not limited, and common means such as gluing or bolts can be adopted. A preferred fixing means is provided here: the spraying piece 3 is of a barrel-shaped structure, an annular step 12 is arranged on the outer edge of one end, connected with the spraying piece 3, of the separating piece 1, and the opening end of the spraying piece 3 is in interference sleeve joint with the annular step 12. On one hand, the assembly is simpler on the premise of ensuring the sealing property; on the other hand, the appearance of the whole structure is more tidy, and swallowing is facilitated.

Specifically, the spraying member 3 may be a barrel or a square barrel or other barrel-shaped structure.

There is provided a preferred spray member 3 configuration: as shown in fig. 5, the spraying member 3 is a second barrel member, the inner cavity of the second barrel member and the bottom of the first barrel member enclose a sealed cavity 4, and the second traction tube 5 is fixed at the bottom of the second barrel member. The spraying part 3 is integrally of a barrel structure, and can reduce damage to the esophagus of a patient compared with a structure with edges.

On the basis of the above preferred structure of the spray element 3, as shown in fig. 3, the separating element 1 is also preferably a first barrel element, the cavity of which forms a cavity 11, and the first traction tube 2 is fixed at the bottom of the first barrel element. Thus, the separating member 1 and the spraying member 3 are both cylindrical structures, which facilitates the assembly of the two.

Further, the outer edge of the bottom of the first barrel part is provided with an annular step 12, and the open end of the second barrel part is sleeved on the annular step 12 in an interference manner. This achieves a fixed connection of the separating element 1 to the spray element 3 and a relative sealing.

The shape of the injection hole 41 is not particularly limited, and may be a circular hole, a square hole, or another shape; the number of the spray holes 41 is not limited in particular, and may be one or two or more, and preferably, a plurality of spray holes are uniformly distributed along the circumferential direction of the side wall of the sealed cavity 4, so that the iodine solution can be sprayed to the esophagus at various angles at the same time, and the efficiency is higher. In detail, if only one or two injection holes 41 are provided, the magnetron capsule endoscope 7 is rotated through the traction tube to spray at various angles or at a specific suspected position when the iodine solution is injected.

The position where the injection hole 41 is opened is not limited, and the injection hole 41 may be formed as an inclined hole on the side wall of the sealed chamber 4 or at the bottom of the chamber.

The specific formation structure of the sealed cavity 4 is not limited, and a concave part is arranged on the spraying member 3, and the concave part and the separating member 1 form the sealed cavity 4, as shown in fig. 3; it is also possible to provide the separating element 1 on the side facing away from the recess 11 with a recess which forms the sealing chamber with the spray element 3 and on which the spray openings 41 open.

Based on the improved structure of the magnetically controlled capsule endoscope traction cap, a preferred structure of the first traction tube 2 is provided, which comprises: one end of the connecting pipe 21 is fixed on the separating piece 1 and communicated with the cavity 11, the other end of the connecting pipe extends towards the opposite direction of the opening of the cavity 11, and the connecting pipe 21 penetrates through the sealing cavity 4 in a sealing way; an extension pipe 22 hermetically connected to the connection pipe 21; the length of the extension pipe 22 is greater than that of the connection pipe 21.

The connection pipe 21 can penetrate through the sealing cavity 4 during specific manufacturing, so that compared with the scheme of integrally manufacturing the first traction pipe 2, the spraying part 3 does not need to be gradually close to the separating part 1 along the length of the first traction pipe 2 from the end part of the first traction pipe 2 during installation, the connection pipe 21 is fixed on the separating part 1, the spraying part 3 is fixed on the separating part 1, then the extension pipe 22 and the connection pipe 21 are connected, and the length of the connection pipe 21 is far smaller than that of the extension pipe 22, so that the installation efficiency can be greatly improved.

Specifically, as shown in fig. 1, the connection pipe 21 is integrally formed with the separator 1, and the extension pipe 22 is fixedly connected to the connection pipe 21. The separating part 1 and the connecting pipe 21 can be processed simultaneously by injection molding or other methods, so that the processing is more convenient, and the sealing performance between the connecting pipe 21 and the separating part 1 can be ensured, so that the first traction pipe 2 and the concave cavity 11 form a sealed channel. In addition, compared with the solution of directly connecting the first traction tube 2 to the separate member 1, the extension tube 22 and the connection tube 21 realize the connection between the two tubes, and the connection is more convenient. Alternatively, the connection pipe 21 may be fixed to the separate member 1 by gluing or the like, and then the extension pipe 22 may be fixedly coupled to the connection pipe 21.

As a modified embodiment of the spraying member 3, as shown in fig. 5, a tubular connecting portion 31 is integrally formed on the spraying member 3, the connecting portion 31 extends in a direction away from the separating member 1, the connecting portion 31 is communicated with the sealed cavity 4, the second traction tube 5 is hermetically connected with the connecting portion 31, and the liquid is injected into the sealed cavity 4 through the second traction tube 5 and the connecting portion 31 and is sprayed out from the spraying hole 41. Compared with the solution of directly connecting the second traction tube 5 to the spray element 3, the second traction tube 5 and the connection portion 31 realize a connection between the two tubes, and the connection is more convenient.

As an improved embodiment of the pull tube, the end of the first pull tube 2 adapted to be led out of the body when examining the esophagus and/or the end of the second pull tube 5 adapted to be led out of the body when examining the esophagus are/is provided with an injector connection 6. The following three schemes are provided: only the end of the first traction tube 2 adapted to be drawn out of the body when examining the esophagus is provided with an injector connection 6; only the end of the second traction tube 5 adapted to be drawn out of the body when examining the esophagus is provided with an injector connection 6; the end of the first traction tube 2 adapted to be brought out of the body when examining the esophagus and the end of the second traction tube 5 adapted to be brought out of the body when examining the esophagus are both provided with an injector connection 6, as shown in fig. 6. When the traction tube is not provided with the injector connection part 6, the traction tube can be matched with the traction tube by adding a corresponding structure on the injector.

Preferably, the syringe connecting part 6 is a luer connector female.

Example 2

An embodiment of a magnetically controlled capsule endoscope kit as provided in fig. 7-8 comprises:

the magnetically controlled capsule endoscope traction cap of example 1;

one end of the magnetic control capsule endoscope 7 is sleeved in the concave cavity 11 in an interference manner.

The working principle of the magnetically controlled capsule endoscope kit of the present invention is described in detail below with reference to fig. 9-10:

before detection, the end part of the magnetically controlled capsule endoscope 7 is sleeved in the cavity 11 in an interference manner; during detection, the magnetic control capsule endoscope 7 and the first traction tube 2 enter the esophagus of a detected human body together, after a patient swallows the capsule, the capsule can be controlled by the first traction tube 2 to move up and down to observe the esophagus, the spraying piece 3 is suspended at the position of the suspected lesion esophagus, then iodine solution is injected into the sealed cavity 4 through the second traction tube 5, the iodine solution is sprayed onto the esophagus through the spray hole 41, and if a superficial infection area appears, the part can be determined to be a tumor part; after all suspected lesion parts of the esophagus are detected, the magnetically controlled capsule endoscope 7 enters the stomach, and the medium is gradually injected into the sealed area through the first traction tube 2 until the traction cap is separated from the capsule, the capsule endoscope is kept for further examination in the stomach, and the traction cap and the first traction tube 2 are taken out of the oral cavity of the patient.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A magnetic control capsule endoscope traction cap is characterized by comprising:

the separating piece (1) is provided with a concave cavity (11) suitable for being sleeved with the end part of the magnetic control capsule endoscope (7) in an interference manner;

the first traction tube (2) is fixed on the separating piece (1) at one end and communicated with the cavity (11), the other end extends towards the opposite direction of the opening of the cavity (11) and is suitable for being led out of the body when the esophagus is detected, and the first traction tube (2) is used for injecting a medium into the cavity (11) to pressurize so as to separate the separating piece (1);

the spraying part (3) is fixed on one side, away from the concave cavity (11), of the separating part (1) and forms a sealed cavity (4) with the separating part (1), a spray hole (41) is formed in the cavity wall of the sealed cavity (4), and the first traction pipe (2) penetrates through the sealed cavity (4) in a sealed mode;

and one end of the second traction tube (5) is fixed on the spraying piece (3) and is communicated with the sealed cavity (4), the other end of the second traction tube extends in the direction far away from the separating piece (1) and is suitable for being led out of the body when the esophagus is detected, and liquid is injected into the sealed cavity (4) through the second traction tube (5) and is sprayed out from the spray hole (41).

2. The magnetically controlled capsule endoscope pulling cap according to claim 1, characterized in that the jet holes (41) are provided at the side wall position of the sealed cavity (4).

3. The magnetically controlled capsule endoscopic traction cap according to claim 1, wherein said first traction tube (2) comprises:

one end of the connecting pipe (21) is fixed on the separating piece (1) and is communicated with the cavity (11), the other end of the connecting pipe extends towards the opposite direction of the opening of the cavity (11), and the connecting pipe (21) penetrates through the sealing cavity (4) in a sealing mode;

an extension pipe (22) hermetically connected to the connection pipe (21);

the length of the extension pipe (22) is greater than that of the connection pipe (21).

4. The magnetically controlled capsule endoscope pulling cap according to claim 3, characterized in that the connecting tube (21) is integrally formed with the separate piece (1), and the extension tube (22) is fixedly connected with the connecting tube (21).

5. The magnetron capsule endoscope pulling cap according to claim 1, wherein the spraying member (3) is integrally formed with a tubular connecting portion (31), the connecting portion (31) extends in a direction away from the separating member (1), the connecting portion (31) is communicated with the sealed cavity (4), the second pulling tube (5) is hermetically connected with the connecting portion (31), and the liquid is injected into the sealed cavity (4) through the second pulling tube (5) and the connecting portion (31) and is ejected from the nozzle hole (41).

6. The magnetically controlled capsule endoscope pulling cap according to any of the claims 1-5, characterized in that the spraying member (3) is a barrel-shaped structure, the outer edge of the end of the separating member (1) connected with the spraying member (3) is provided with an annular step (12), and the open end of the spraying member (3) is sleeved on the annular step (12) in an interference manner.

7. The magnetically controlled capsule endoscope traction cap according to claim 6, wherein the separating member (1) is a first barrel member, the inner cavity of the first barrel member forms the cavity (11), and the first traction tube (2) is fixed at the bottom of the first barrel member; the spraying part (3) is a second barrel part, the inner cavity of the second barrel part and the barrel bottom of the first barrel part enclose to form the sealing cavity (4), and the second traction pipe (5) is fixed at the barrel bottom of the second barrel part.

8. The magnetically controlled capsule endoscopic traction cap according to any of claims 1 to 5, wherein the end of the first traction tube (2) adapted to be brought out of the body when examining the esophagus and/or the end of the second traction tube (5) adapted to be brought out of the body when examining the esophagus is provided with an injector connection (6).

9. A kit, comprising:

the magnetically controlled capsule endoscopic drag cap of any one of claims 1-8;

one end of the magnetic control capsule endoscope (7) is sleeved in the concave cavity (11) in an interference manner.