CN217611220U - Cavity tube adjusting instrument - Google Patents

Abstract

The application provides a cavity tube adjusting instrument which mainly comprises an adjusting body, a surrounding structure and a cavity tube, wherein the surrounding structure penetrates through the adjusting body and comprises a surrounding part exposed out of the adjusting body; and the driving structure is respectively connected with the adjusting body and the surrounding structure, wherein the surrounding part can circumferentially surround the target cavity tube, and the driving structure can control the surrounding structure to move relative to the adjusting body so as to adjust the section area of the surrounding part and enable the cross section of the target cavity tube to be deformed to different degrees according to different section areas of the surrounding part. In view of the above, this application can conveniently and accurately adjust the cross sectional area of surrounding part to reach the mesh of the liquid velocity of flow in the accurate regulation and control target lumen.

Description

Cavity tube adjusting instrument

Technical Field

The embodiment of the application relates to the technical field of medical instruments, in particular to a lumen adjusting instrument.

Background

In surgical operations, when tissues and organs with relatively rich blood flow are treated, in order to avoid excessive blood loss during the operation, the blood supply of the tissues and organs is often reduced by controlling the blood flow rate of main blood vessels of the tissues and organs, so as to reduce the risk of excessive blood loss of target tissues and organs during the operation. For example, in liver resection surgery, it is common to reduce the risk during liver resection by blocking the blood flow in the hepatic portal blood vessels.

The existing blood flow control apparatus is mainly used for wrapping blood vessels, fixing the free ends of the blocking belts on the sheath tubes, and then realizing the control of the hepatic portal blood flow through the rear end control part.

However, the operation of this blood flow control apparatus still has the following disadvantages: 1. after the blocking strap bypasses the blood vessel, the fixing device of the blocking strap is positioned in the sheath tube, so that the position of the sheath tube can be changed in the process of winding the blocking strap, and the fixing operation of the blocking strap is difficult. 2. The blocking band is long, and after the blocking band is wrapped around a blood vessel, a doctor needs to fix the blocking band on the sheath, so that the blocking band cannot be tightly attached to the hepatic portal blood vessel, the gap between the blocking band and the hepatic portal blood vessel after the blocking band is fixed is large, and the design of the sheath is correspondingly long. 3. The portal of a patient who usually undergoes one liver operation can be adhered to other tissues around the portal, which results in that the blocking belt cannot easily pass through the tissue gap around the portal and cannot wrap the portal blood vessel in the second liver operation.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application provides a lumen adjustment instrument to overcome or at least partially address the above-mentioned problems.

The present application provides a lumen adjusting instrument, including: adjusting the body; the surrounding structure penetrates through the adjusting body and comprises a surrounding part exposed out of the adjusting body; a driving structure respectively connecting the adjusting body and the surrounding structure; wherein the surrounding part can circumferentially surround the target cavity tube, and the driving structure can control the surrounding structure to move relative to the adjusting body so as to adjust the section area of the surrounding part and enable the cross section of the target cavity tube to be deformed to different degrees according to different section areas of the surrounding part.

Optionally, the surrounding structure comprises: the device comprises a first surrounding part, a second surrounding part and a combined part; at least one of the first and second surrounds is axially movable relative to the adjustment body; the assembly part is arranged on the first surrounding part and the second surrounding part respectively, and the first surrounding part and the second surrounding part can be combined with each other to form the surrounding part.

Optionally, the assembly includes a first penetrating portion disposed on the first surrounding member and a first positioning portion disposed on the second surrounding member; the second surrounding part can be arranged in the first penetrating part in a penetrating way, and the first positioning part can be abutted against one side or two opposite sides of the first penetrating part so as to position the second surrounding part relative to the first surrounding part.

Optionally, the first penetrating part comprises a penetrating groove and a first limiting hole which are communicated with each other; when the through groove is in a closed state, the first positioning part of the second surrounding part can be limited to pass through, so that the second surrounding part is positioned relative to the first surrounding part; when the through groove is in an open state, the first positioning part of the second surrounding part can be allowed to pass through, so that the second surrounding part can be displaced relative to the first surrounding part.

Optionally, the first penetrating part comprises a penetrating wing arranged on at least one side of the penetrating groove; the penetrating wing can be stressed to generate elastic deformation so that the penetrating groove is switched between an opening state and a closing state.

Optionally, the piercing wing is made of a flexible material.

Optionally, the first detent comprises an invertebrate pawl; when the second surrounding part is limited in the first limit hole, the inverted spine can abut against one side of the first limit hole to limit the displacement of the second surrounding part relative to the first limit hole. The end part of the first surrounding part also comprises an operating part adjacent to the first penetrating part, and the first penetrating part can be positioned by the operating part so as to be penetrated by the second surrounding part.

Optionally, the assembly includes a second penetrating portion disposed on the first surrounding member and a second positioning portion disposed on the second surrounding member; the second penetrating part comprises a penetrating channel and a second limiting hole communicated with the penetrating channel; the penetrating channel can be stressed to generate elastic deformation so that the second surrounding piece can enter the second limiting hole through the penetrating channel; the through channel can be elastically restored under a non-stressed state so as to limit the second surrounding piece in the second limiting hole, and the second positioning part can be abutted against the second limiting hole, so that the second surrounding piece and the first surrounding piece are positioned and combined to position the second surrounding piece relative to the first surrounding piece.

Optionally, the through passage comprises a first end adjacent to the second limiting hole and a second end opposite to the first end; the second penetrating part also comprises a passage opening which is arranged adjacent to the second end of the penetrating passage; the second surrounding part can enter the penetrating passage through the passage opening, so that the penetrating passage is elastically deformed by the abutting force of the second surrounding part, and the second surrounding part can move from the second end to the first end until entering the second limiting hole.

Optionally, when the through passage is in an unstressed state, a radial diameter of the through passage is smaller than a diameter of the second limiting hole, so that the second surrounding member is limited in the second limiting hole.

Optionally, the second positioning portion is provided at an end of the second surrounding member.

Optionally, the first surrounding portion including the first penetrating portion or the second penetrating portion is fixedly connected to the adjusting body.

Optionally, at least one of the first and second surrounding members may be connected to the driving structure and may be driven by the driving structure to move axially relative to the adjustment body to form the surrounding portions of different cross-sectional areas.

Optionally, the drive structure comprises: a driving body connected to the adjusting body; the limiting parts are distributed on the driving body along the axial direction of the driving body; a drive member connecting at least one of the first and second surrounds; the driving piece can move relative to the driving body and is positioned in any one of the limiting parts so as to adjust the moving position of the first surrounding piece and/or the second surrounding piece relative to the adjusting body, and therefore the cross-sectional area of the surrounding parts can be adjusted.

Optionally, the driver comprises: the elastic buckling part is arranged in the driving body and is connected with the first surrounding part and/or the second surrounding part; the driving part is connected with the elastic buckling part; the elastic buckling part can abut against any one limiting part in an unstressed state so as to be positioned relative to the driving body, and can generate elastic deformation under the action of the driving part along a first axial direction so as to be separated from the limiting part; when the elastic buckling part is separated from the limiting part, the elastic buckling part can be driven by the acting force of the driving part along the second axial direction to move in a reciprocating manner relative to the driving body so as to adjust the positioning position of the elastic buckling part relative to the driving body; wherein the first axial direction is perpendicular to an axial direction of the drive body and the second axial direction is parallel to the axial direction of the drive body.

Optionally, the apparatus further comprises a connecting structure comprising: a connection pipe connecting the adjustment body and the driving body; and the guide wire is arranged in the connecting pipe in a penetrating manner and is used for connecting the driving piece with at least one of the first surrounding piece and the second surrounding piece.

In summary, the lumen adjusting instrument of the present embodiment utilizes the driving structure to drive the surrounding structure to reciprocate relative to the adjusting body, so as to precisely and rapidly adjust the cross-sectional area of the surrounding portion, thereby achieving the purpose of precisely controlling the flow rate of the liquid in the target lumen.

Moreover, the combination parts respectively arranged on the first surrounding part and the second surrounding part are utilized to combine the first surrounding part and the second surrounding part with each other to form the surrounding parts with different cross-sectional areas, and the advantages of convenient operation and high combination stability are achieved, so that the smooth execution of the operation is facilitated.

In addition, the driving piece can be positioned at different positions of the driving body by arranging the limiting parts on the driving body, so that the moving position of the first surrounding piece and/or the second surrounding piece relative to the adjusting body is adjusted, and the purpose of adjusting the section area of the surrounding parts is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a schematic view of the entire structure of the lumen control device of the present application.

FIGS. 2-8 are schematic structural views of an assembly of an embodiment of a lumen adjustment instrument of the present application.

Fig. 9 to 10 are views illustrating various embodiments of the driving structure of the lumen adjusting instrument according to the present invention.

FIG. 11 is a schematic view of another embodiment of a lumen adjusting instrument of the present application.

FIGS. 12-19 are schematic structural views of an assembly of another embodiment of a lumen adjustment instrument of the present application.

Element number

1: a lumen conditioning instrument;

10: adjusting the body;

20: a surrounding structure;

200: a surrounding portion;

202: a first surround;

204: a second surrounding member;

206: an assembly;

208: a first penetration portion;

210: a first positioning portion;

212: a groove is arranged in a penetrating way;

214: a first limit hole;

218: the wing is arranged in a penetrating way;

220: inverted spines;

222: an operation section;

223: a second penetration portion;

224: a channel is penetrated;

224a: a first end;

224b: a second end;

226: a second limiting hole;

228: a second positioning portion;

230: a passage opening;

30: a drive structure;

302: a drive body;

304: a limiting part;

306: a drive member;

308: an elastic buckling part;

310: a drive section;

40: a connecting structure;

402: a connecting pipe;

404: a guidewire.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application shall fall within the scope of protection of the embodiments in the present application.

As medical screening has progressed, more and more tumors can be diagnosed in time, and surgical treatment remains the primary treatment for solid tumors. When surgery is performed on parenchymal organs with abundant blood vessels (e.g., systemic blood flow can circulate in the liver every 25 seconds), intraoperative hemorrhage control is often the key to success or failure of surgery: on one hand, excessive bleeding is often the main cause of serious complications; on the other hand, a long-term blood flow blockage or ischemia reperfusion process also causes severe damage to organs. Both conditions may lead to death of the patient. Bleeding control is also a key technology point limiting the development of surgical techniques. In the present day, in which the proportion of minimally invasive surgery is continuously increasing, more requirements are also placed on bleeding control techniques.

Taking the progress of the liver surgery technology as an example, based on data analysis and research of liver dissection and liver blood vessel shaping, on the basis of combining a large amount of surgical practices, wumengtao institute creates a liver blood flow blocking technology of 'intermittent hepatic portal blocking at normal temperature', lays the foundation of liver surgery for China, and reduces the death rate of liver surgery in China from 33% in the 50 s of the last century to 0.35%. The oriental hepatobiliary surgery hospital can take a series of liver resection marking operations represented by the hepatectomy as the successful operation in the world first. 7000 cases of liver resection operations are performed in the last decade, so that the hospital becomes the biggest liver specialized hospital all over the world.

Modern liver surgery always takes minimally invasive operations such as laparoscopy and the like as development directions, but the liver vascular blocking technology summarized before is directly applied to the laparoscopic environment, and can not play a role due to the limitation of operation environment, technology, instruments and the like, so that the safety of laparoscopic liver resection with treatment advantages cannot be sufficiently technically guaranteed like an open abdominal operation. The above problem can be summarized as follows: 1, proper bleeding control technology is lacked, so that the technical threshold of a laparoscopic hepatectomy operator is increased, and the popularization is difficult; 2 hepatectomy, which is prone to massive hemorrhage, cannot be safely performed in a laparoscopic environment, but rather increases the damage of laparoscopic surgery; 3 the existing hepatic portal vessel blocking technology needs a plurality of specific procedures for blocking, and the complicated process increases the time and the risk of the operation.

Furthermore, with the revolution of surgical medical instruments, the liver cutting technique is gradually improved from jaw-banding to high-frequency electrosurgery workstations (energy platforms), ultrasonic knives, ligasure vessel sealers, etc. Although the condition of bleeding in the hepatectomy process is improved, the hemostatic effect is good only for small blood vessels, and for the bleeding control of complicated hepatectomy operations close to large blood vessels, special parts and the like, the traditional technology for controlling the controlled release of the hepatic blood vessel bundling is still the indispensable basic technical guarantee that the operations can be smoothly carried out.

Thus, the use of laparoscopic hepatectomy and new surgical instruments does not reduce the reliance on traditional hemorrhage control techniques.

In the prior art, aiming at specific hepatic vessels, the bleeding control effect is achieved mainly through special clamp design, the bleeding control for liver surgery is improved, the research result is published in the international authoritative magazine Ann Surg, and the clamp method has advantages in controlling blood flow and can obtain the approval of the same line, but the technology cannot be popularized due to high requirements on the surgical technique of a surgeon.

In a patent for controlling liver bleeding under a laparoscope in a clamp form, chinese patent No. 201110096098.1 discloses a detachable laparoscopic portal vein blocker, which can be implemented under a laparoscopic environment, has a detachable function, and ensures that the view of the laparoscope is not blocked in the bleeding control process. The head end forms of the forceps are developed according to anatomical characteristics of different blood vessels, and therefore accuracy of blood flow control is improved. However, the technical difficulties which cannot be overcome temporarily exist in the technical scheme, for example, the butt joint, control and operation safety of the clamp device under the endoscope still has flaws, incomplete possibility exists in the clamp of the clamp device under the endoscope environment for clamping the target blood vessel, the visual field is limited, and technical safety hazards are caused.

However, in the process of verifying the scheme, the problems of flexibility of jaw control, uncertainty of jaw control bleeding and selection effectiveness of blood vessel control are found, the defects cannot be overcome temporarily, and further improvement is still needed.

Aiming at the existing operation technology for controlling the blood flow of a target blood vessel, a device which can surround the target blood vessel and press the blood vessel is needed, in particular to an operation auxiliary device which meets the restriction of the operation condition of an endoscope. Vascular wrapping becomes the most effective solution for bleeding control closest to the routine clinical practice. Other deficiencies with current vascular blood flow control procedures include: 1. whether a tape or a clamp is used, the operation process under the endoscope becomes more difficult due to the limitation of the operation path, and the smooth and safe completion of a plurality of operations with possible heavy bleeding under the endoscope is also restricted; 2. the operation of clamping to control blood flow may be difficult to cover the circumference of the vessel and may not achieve the purpose of effective blood flow control; 3. the head of the forceps holder has insufficient curvature, so that the forceps holder cannot clamp a special target blood vessel, and the curvature is too large, so that the forceps holder cannot pass through an operation hole of the endoscope, and the application of the forceps holder under the endoscope is limited. 4. Multiple steps of operation are required to achieve coil winding around a target blood vessel under an endoscope, increasing operation difficulty and risk, and limiting the application range of the operation under the endoscope.

Therefore, how to provide a new blood flow control technology, can change the traditional mode of "blocking first and then operating" into "blocking first and then blocking as required", can change "long-time, difficult to adjust in time the vascular blocking" into "can control the vascular blood flow to block in real time", will "many people cooperate to accomplish and block the operation" and change into "one can operate and accomplish", thereby reduce the human cost, ensure the safety of patient perioperative period, reduce the risk of operation, reduce the technical requirement of operation of operative person, easily the operative person blocks the operation under the peritoneoscope environment and so on, become the problem to be solved urgently.

The following further describes specific implementations of the embodiments of the present application with reference to the drawings of the embodiments of the present application.

As shown in FIG. 1, the lumen adjusting instrument 1 of the present application comprises an adjusting body 10, a surrounding structure 20, and an actuating structure 30.

In the present embodiment, the surrounding structure 20 may be disposed in the adjusting body 10, and includes a surrounding portion 200 (refer to fig. 2) exposed from the adjusting body 10 for circumferentially surrounding the target lumen.

In this embodiment, the driving structure 30 is connected to the adjusting body 10 and the surrounding structure 20 respectively, and the driving structure 30 can control the surrounding structure 20 to move relative to the adjusting body 10 to adjust the cross-sectional area of the surrounding portion 200, so that the cross-section of the target lumen can be deformed to different degrees according to different cross-sectional areas of the surrounding portion 200, thereby adjusting the flow rate of the liquid in the target lumen.

Alternatively, the target lumen may be a deformable lumen having an internal lumen, including, but not limited to, blood vessels, bile ducts, lymphatic vessels, trachea, ureters, lumens of the digestive system, and various biological tissue lumens.

Specifically, as the cross-sectional area of the surrounding portion 200 circumferentially surrounding the target lumen is larger, the smaller the force applied to the target lumen by the surrounding portion 200 is, the smaller the degree of deformation of the target lumen is, and the faster the fluid flow rate in the target lumen is; conversely, when the cross-sectional area of the surrounding portion 200 circumferentially surrounding the target lumen is smaller, the target lumen is subjected to a greater force by the surrounding portion 20, the greater the degree of deformation of the target lumen, and the slower the fluid flow rate within the target lumen.

Optionally, the surround structure 20 may include: a first surround 202, a second surround 204, and a combination 206.

In this embodiment, at least one of the first and second surrounds 202, 204 is axially movable relative to the adjustment body 10.

For example, in the embodiment shown in fig. 1 to 5, the first surrounding element 202 is fixedly connected to the adjustment body 10, and the second surrounding element 204 is movable relative to the adjustment body 10, but not limited thereto, it is also possible to design that both the first surrounding element 202 and the second surrounding element 204 are movable relative to the adjustment body 10.

Optionally, the assembly 206 may be disposed on the first surrounding element 202 and the second surrounding element 204, so that the first surrounding element 202 and the second surrounding element 204 can be combined with each other to form the surrounding portion 200.

Alternatively, as shown in fig. 2 to 8, the assembly 206 may include a first through hole 208 disposed on the first surrounding member 202 and a first positioning portion 210 disposed on the second surrounding member 204.

The second surrounding member 204 can be disposed in the first penetrating portion 208, and the first positioning portion 210 can be abutted against one side or two opposite sides of the first penetrating portion 208, so as to position the second surrounding member 204 relative to the first surrounding member 202.

In the present embodiment, the first penetrating portion 208 may include a penetrating groove 212 and a first limiting hole 214 that are communicated with each other, wherein the penetrating groove 212 may be switched between an open state and a closed state. When the through groove 212 is in the closed state, the first positioning portion 210 of the second surrounding element 204 can be restricted from passing through, so that the second surrounding element 204 is positioned relative to the first surrounding element 202; when the through-groove 212 is in the open state, the first positioning portion 210 of the second surrounding element 204 is allowed to pass through, so that the second surrounding element 204 can be displaced relative to the first surrounding element 202.

Optionally, the first through hole 208 further includes a through hole wing 218 disposed on at least one side of the through hole 212. For example, in the embodiment shown in FIG. 8, the threading wings 218 are disposed on opposite sides of the threading slot 212.

In the present embodiment, the through wing 218 is elastically deformed by a force, so that the through slot 212 is switched between an open state and a closed state.

In an embodiment, the first positioning portion 210 of the second surrounding element 204 can apply an abutting force to the through-hole wing 218 under the action of an external force, so that the through-hole wing 218 is elastically deformed to switch the through-hole 212 to an open state, thereby allowing the first positioning portion 210 to pass through the through-hole 212, so as to allow the second surrounding element 204 to displace relative to the first surrounding element 202 (refer to the state shown in fig. 4 and 5); when the external force applied to the second surrounding element 204 is released, the penetrating wing 218 can elastically recover to switch the penetrating slot 212 from the open state to the closed state, in which state the first positioning portion 210 on the second surrounding element 204 can abut against one side or two opposite sides of the first limiting hole 214, so that the second surrounding element 204 can be positioned relative to the first surrounding element 202 to form the surrounding portion 200 circumferentially surrounding the target lumen (refer to the state shown in fig. 2 and 3).

Alternatively, the first positioning portion 210 may comprise a plurality of first positioning portions 210, and each first positioning portion 210 may be spaced along the axial direction of the second surrounding member 204 to form surrounding portions 220 with different cross-sectional areas to be suitable for surrounding target lumens with different tube diameters.

Optionally, the first detent 210 may include a barb 220.

When the second surrounding element 204 is confined in the first confining hole 214, the pawl 220 on the second surrounding element 204 can abut against one side of the first confining hole 214 to limit the displacement of the second surrounding element 204 relative to the first confining hole 214 (refer to fig. 2 and 3).

Optionally, the end of the first surrounding element 202 may further include an operating portion 222 adjacent to the first penetrating portion 208, and the first penetrating portion 208 may be positioned by the operating portion 222 for penetrating the second surrounding element 204 therein.

Alternatively, the operating portion (222) 24 may have a length of 1 to 2 cm.

Specifically, the operation portion 222 can be used in combination with an operation tool (such as a surgical clamp, etc., not shown), and the operation portion 222 can be firmly clamped by the surgical clamp to perform the relevant operation.

Alternatively, as shown in fig. 12 to 19, the assembly 206 may include a second penetration portion 223 and a second positioning portion 228.

The second penetrating portion 223 can be disposed on the first surrounding element 202, and includes a penetrating channel 224 and a second limiting hole 226 communicating with the penetrating channel 224.

The second positioning portion 228 may be protruded on the second surrounding member 204.

In this embodiment, the second positioning portion 228 can be protruded at the end of the second surrounding element 202, so that the end of the second surrounding element 202 is mushroom-shaped. However, the second positioning portion 228 may also be disposed at the middle portion of the second surrounding element 202, which is not limited in the present application.

The through passage 224 is elastically deformable under a force, so that the second surrounding element 204 enters the second limiting hole 226 through the through passage 224 (refer to fig. 14 to 16).

The through channel 224 can be elastically restored in an unstressed state to limit the second surrounding element 204 in the second limiting hole 226, and in this state, the second positioning portion 228 can abut against one side of the second limiting hole 226 (refer to fig. 17 to 19), so that the second surrounding element 204 and the first surrounding element 202 are positioned and combined to form the surrounding portion 200 (refer to fig. 17).

Alternatively, the through passage 224 may include a first end 224a adjacent to the second limiting hole 226 and a second end 224b opposite to the first end 224a, and the second through portion 223 further includes a passage opening 230 (refer to fig. 16) disposed adjacent to the second end 224b of the through passage 224.

The second surrounding element 204 can enter the through passage 224 through the passage opening 230 (refer to fig. 14 to 16), so that the through passage 224 is elastically deformed by the abutting force of the second surrounding element 204, and the second surrounding element can move from the second end 224b of the through passage 224 to the first end 224a of the through passage 224 until entering the second limiting hole 226 (refer to fig. 17 to 19).

In the embodiment, when the through passage 224 is in the non-stressed state, the radial diameter of the through passage 224 is smaller than the diameter of the second limiting hole 226, so that the second surrounding element 204 is limited in the second limiting hole 226.

Specifically, when the second surrounding element 204 enters the second limiting hole 226, the abutting force of the second surrounding element 204 on the penetrating channel 224 is released, so that the penetrating channel 224 is elastically restored in an unstressed state, and the radial diameter of the penetrating channel 224 is smaller than the diameter of the second limiting hole 226, thereby limiting the second surrounding element 204 in the second limiting hole 226.

Alternatively, the second penetration portion 223 may be made of an elastic material.

Optionally, at least one of the first and second surrounds 202, 204 may be connected to the driving structure 30 and may be driven by the driving structure 30 to move axially relative to the adjustment body 10 to form the surrounds 200 with different cross-sectional areas.

For example, in the embodiment shown in fig. 1 to 5, the second surrounding member 204 may be connected to the driving structure 30 to be driven by the driving structure 30 to move axially relative to the adjusting body 10, so as to form the surrounding portion 200 with different cross-sectional areas.

In this embodiment, the driving structure 30 further includes: the driving device comprises a driving body 302, a plurality of limiting parts 304 and a driving part 306.

The drive body 302 may be connected to the adjustment body 10 and the drive member 306 may be connected to at least one of the first and second surrounds 202, 204.

In this embodiment, the lumen modulating instrument 1 may further include a connecting structure 40 between the modulating body 10 and the actuating body 302.

Wherein the driving body 302 can be connected to the adjusting body 10 (refer to fig. 1) via a connecting tube 402 of the connecting structure 40, and the driving member 306 can be connected to at least one of the first surrounding member 202 and the second surrounding member 204 via a guide wire 404 disposed in the connecting tube 402

In the present embodiment, the position-limiting portions 304 may be distributed on the driving body 302 along the axial direction of the driving body 302.

The driving member 306 is movable relative to the driving body 302 and is positioned at any one of the limiting portions 304 to adjust the moving position of the first surrounding element 202 and/or the second surrounding element 204 relative to the adjusting body 10, so as to adjust the cross-sectional area of the surrounding portion 200.

Optionally, the driver (306) comprises a resilient catch 308 and a driver 310.

The elastic locking portion 308 can be disposed in the driving body 302 and connected to the first surrounding element 202 and/or the second surrounding element 204, and the driving portion 310 can be connected to the elastic locking portion 308.

In the present embodiment, the driving portion 310 may be designed to be easily held by a user, so that the user can apply a force to the driving portion 310 along a first axial direction (e.g., the X-axis direction shown in fig. 9 and 10) or a second axial direction (e.g., the X-axis direction shown in fig. 9 and 10).

The elastic buckling portion 308 can abut against any one of the position-limiting portions 304 in an unstressed state to be positioned relative to the driving body 302, and can be elastically deformed by an acting force of the driving portion 310 along a first axial direction (for example, an X-axis direction shown in fig. 9 and 10) to be separated from the position-limiting portion 304.

In a state where the elastic locking portion 308 and the limiting portion 304 are separated from each other, the elastic locking portion 308 can be driven by an acting force of the driving portion 310 along a second axial direction (for example, a Y-axis direction shown in fig. 9 and 10) to move back and forth relative to the driving body 302, so as to adjust a positioning position of the elastic locking portion 308 relative to the driving body 302, and drive the first surrounding element 202 and/or the second surrounding element 204 to move relative to the adjusting body 10, so as to adjust a cross-sectional area of the surrounding portion 200.

In summary, the lumen adjusting instrument of the present application can drive the surrounding structure to move relative to the adjusting body by the driving structure to adjust the cross-sectional area of the surrounding portion formed by the surrounding structure, so that the cross-section of the target lumen tube can be deformed to different degrees according to different cross-sectional areas of the surrounding portion, thereby achieving the purpose of accurately adjusting and controlling the flow rate of the liquid in the target lumen tube.

Moreover, the first surrounding part and the second surrounding part can be easily combined or disassembled with each other through the assembly part respectively arranged on the first surrounding part and the second surrounding part, and the better combination stability is provided, so that the smooth execution of the operation is facilitated.

In addition, a plurality of limiting parts are arranged on the driving body, acting forces in different axial directions are applied to the driving piece, so that the driving piece can be positioned at different positions of the driving body, the purpose of accurately regulating and controlling the section area of the surrounding part is further achieved, and the driving device has the advantage of being simple and convenient to operate.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (18)

1. A lumen adjusting instrument, comprising:

adjusting the body;

the surrounding structure penetrates through the adjusting body and comprises a surrounding part exposed out of the adjusting body;

a driving structure respectively connecting the adjusting body and the surrounding structure;

wherein the surrounding part can circumferentially surround the target cavity tube, and the driving structure can control the surrounding structure to move relative to the adjusting body so as to adjust the section area of the surrounding part and enable the cross section of the target cavity tube to be deformed to different degrees according to different section areas of the surrounding part.

2. The apparatus according to claim 1 wherein said surrounding structure comprises: the device comprises a first surrounding part, a second surrounding part and a combined part;

at least one of the first and second surrounds is axially movable relative to the adjustment body;

the assembly part is arranged on the first surrounding part and the second surrounding part respectively, and the first surrounding part and the second surrounding part can be combined with each other to form the surrounding part.

3. The apparatus of claim 2, wherein the assembly includes a first through-going portion disposed on the first surrounding member and a first positioning portion disposed on the second surrounding member; wherein the content of the first and second substances,

the second surrounding member can be arranged in the first penetrating portion in a penetrating manner, and the first positioning portion can be abutted against one side or two opposite sides of the first penetrating portion so as to position the second surrounding member relative to the first surrounding member.

4. The apparatus according to claim 3, wherein the first penetrating portion comprises a penetrating groove and a first limiting hole which are communicated with each other;

the through groove can be switched between an opening state and a closing state;

when the through groove is in a closed state, the first positioning part of the second surrounding part can be limited to pass through, so that the second surrounding part is positioned relative to the first surrounding part; when the through groove is in an open state, the first positioning part of the second surrounding part can be allowed to pass through, so that the second surrounding part can be displaced relative to the first surrounding part.

5. The apparatus according to claim 4 wherein said first threading includes a threading wing disposed on at least one side of said threading slot;

the penetrating wing can be stressed to generate elastic deformation so that the penetrating groove is switched between an opening state and a closing state.

6. The apparatus according to claim 5 wherein said piercing wing is constructed of a flexible material.

7. The device of claim 4, wherein the first detent includes a pawl; wherein, the first and the second end of the pipe are connected with each other,

when the second surrounding part is limited in the first limit hole, the pawl can abut against one side of the first limit hole to limit the displacement of the second surrounding part relative to the first limit hole.

8. The apparatus according to claim 3, wherein the end of the first surrounding member further comprises an operation portion adjacent to the first through-hole, by which the first through-hole can be positioned for the second surrounding member to pass through.

9. The apparatus according to claim 2, wherein the combination comprises a second through-going portion provided on the first surrounding member and a second positioning portion provided on the second surrounding member;

the second penetrating part comprises a penetrating channel and a second limiting hole communicated with the penetrating channel;

the penetrating channel can be stressed to generate elastic deformation so that the second surrounding piece can enter the second limiting hole through the penetrating channel;

the through channel can be elastically restored under a non-stressed state so as to limit the second surrounding piece in the second limiting hole, and the second positioning part can be abutted against the second limiting hole, so that the second surrounding piece and the first surrounding piece are positioned and combined to position the second surrounding piece relative to the first surrounding piece.

10. The apparatus according to claim 9,

the penetrating channel comprises a first end adjacent to the second limiting hole and a second end opposite to the first end;

the second penetration portion further comprises a passage opening arranged adjacent to a second end of the penetration passage;

the second surrounding part can enter the penetrating passage through the passage opening, so that the penetrating passage is elastically deformed by the abutting force of the second surrounding part, and the second surrounding part can move from the second end to the first end until entering the second limiting hole.

11. The apparatus according to claim 9,

when the penetrating channel is in a non-stressed state, the radial diameter of the penetrating channel is smaller than that of the second limiting hole, so that the second surrounding part is limited in the second limiting hole.

12. The instrument of claim 9, wherein the second locator is provided at an end of the second surround.

13. The apparatus according to claim 3, wherein said first surrounding portion including said first through-going portion is fixedly connected to said adjustment body.

14. The apparatus according to claim 9, wherein said first surrounding portion including said second through portion is fixedly connected to said adjustment body.

15. The instrument of claim 2, wherein at least one of the first and second surrounds is connectable to the drive structure and is axially movable relative to the adjustment body by the drive structure to form the surrounds of different cross-sectional areas.

16. The instrument of claim 15, wherein the drive structure comprises:

a driving body connected with the adjusting body;

the limiting parts are distributed on the driving body along the axial direction of the driving body;

a drive member connecting at least one of the first and second surrounds;

the driving piece can move relative to the driving body and is positioned in any one of the limiting parts so as to adjust the moving position of the first surrounding piece and/or the second surrounding piece relative to the adjusting body, and therefore the cross-sectional area of the surrounding parts is adjusted.

17. The instrument of claim 16, wherein the driver comprises:

the elastic buckling part is arranged in the driving body and is connected with the first surrounding piece and/or the second surrounding piece;

the driving part is connected with the elastic buckling part;

the elastic buckling part can be abutted against any one limiting part in a non-stressed state so as to be positioned relative to the driving body, and can be elastically deformed by the action force of the driving part along the first axial direction so as to be separated from the limiting part;

when the elastic buckling part is separated from the limiting part, the elastic buckling part can be driven by the acting force of the driving part along the second axial direction to move in a reciprocating manner relative to the driving body so as to adjust the positioning position of the elastic buckling part relative to the driving body;

wherein the first axial direction is perpendicular to an axial direction of the drive body, and the second axial direction is parallel to the axial direction of the drive body.

18. The instrument of claim 17, further comprising a connecting structure comprising:

a connection pipe connecting the adjustment body and the driving body;

and the guide wire is arranged in the connecting pipe in a penetrating manner and is used for connecting the driving piece with at least one of the first surrounding piece and the second surrounding piece.

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