CN213129763U - Ligation ring assembly and ligation device - Google Patents

Abstract

The utility model discloses a ligation ring subassembly and ligation device, a ligation ring subassembly, including ligation ring and ligation ring mounting of cover, the ligation ring mounting is the tube-shape, ligation ring mounting has ligation device connecting portion and ligation ring connecting portion, the ligation ring has elasticity, tensile state the ligation ring cover is in the outer peripheral face of ligation ring connecting portion, ligation ring and ligation ring mounting form the subassembly that is independent of ligation device, the subassembly passes through ligation device connecting portion can be dismantled with ligation device and be connected. The ligation ring and the ligation ring fixing piece are combined to form an independent assembly, when the device is used, the device is directly connected with the ligation device through the ligation device connecting part, after the ligation ring on the ligation ring fixing piece is released by the ligation device, the ligation ring fixing piece is separated from the ligation device, and then the other assembly is replaced, so that the reciprocating operation is carried out. Meanwhile, the ligation ring is not required to be sleeved on the inner sleeve of the ligation device, so that cross infection is avoided, and the operation is simpler and more convenient.

Description

Ligation ring assembly and ligation device

Technical Field

The utility model is used for the medical instrument field especially relates to a loop ligature circle subassembly and loop ligature ware.

Background

At present, the early cancer and the submucosal tumor of the digestive tract can be clinically cured by the endoscopic minimally invasive surgery, and the larger wound of the surgical operation is avoided. These procedures mainly include Endoscopic Submucosal Dissection (ESD), endoscopic full-thickness resection (EFR), endoscopic submucosal tumor resection (STER), and endoscopic tunneling resection (STER). However, these procedures are complicated, high in risk and difficult to popularize in most hospitals. In addition, there is controversy over endoscopic minimally invasive resection of tumors under the mucosa of the digestive tract, (1) ESD, EFR and STER resect tumors, which is difficult to avoid damaging the envelope of the tumor and difficult to achieve R0 resection (R0 is no residue under microscope after resection); (2) surgical risks, especially for EFR procedures, are challenging and, in severe cases, life-threatening to the patient. Therefore, it is important to find an operation mode which is simple and rapid in operation, good in treatment effect and safe. The endoscope is used in ligation of pathological base and then excision of pathological change from the root of the ligation or long-term ischemia and necrosis of pathological change after ligation to eliminate pathological change. The operation method has the advantages of simple operation, short operation time, few complications in the operation and easy popularization and application. Currently, some ligation device are used for endoscopic ligation resections. However, in these ligation devices, the size of the ligation ring used for ligation is small, and the size of the lesion that can be removed by ligation is limited, which affects the popularization and application of endoscopic ligation removal; the ligation strength and firmness of the ligation ring are limited, and the risk of incomplete ligation and easy loosening exists; some ligation devices are disposable instruments, and after a ligation band is used up at one time, a ligation band release device is discarded, which increases the cost.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a ligation ring assembly and a ligation device, which combine a ligation ring and a ligation ring fixing member to form an independent assembly, and can be assembled when needed, therefore, except the ligation ring and the ligation ring fixing member, other parts of the device can be repeatedly sterilized and used, thus saving the cost; the ligation ring of the utility model has large ligation strength and size, so that the ligation is firm and larger-size lesion can be ligated; the ligation ring is sleeved on the ligation ring fixing piece, and the ligation ring is released in a mode of horizontally pushing out the ligation ring, so that the form of the ligation ring is flexibly arranged, for example, the ligation ring can be arranged into a ligation band with a certain width, and more mucosal tissues can be ligated in a sleeving manner.

The utility model provides a technical scheme that its technical problem adopted is:

in a first aspect, the ligation ring assembly comprises a ligation ring and a ligation ring fixing piece, wherein the ligation ring fixing piece is in a cylindrical shape, the ligation ring fixing piece is provided with a ligation device connecting portion and a ligation ring connecting portion, the ligation ring is elastic and in a stretching state, the ligation ring is sleeved on the outer peripheral surface of the ligation ring connecting portion, the ligation ring and the ligation ring fixing piece form an assembly independent of the ligation device, and the assembly is detachably connected with the ligation device through the ligation device connecting portion.

With reference to the first aspect, in certain implementations of the first aspect, an inner surface of the ligation ring is provided with barbed protrusions.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the inner surface of the ligation ring is provided with a plurality of barbed areas, and the barbed areas are tightly arranged on the barbed areas.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the ligation ring fixing piece is provided with an avoidance notch at a position corresponding to the barbed area, and the avoidance notch extends to an edge of the ligation ring connecting portion.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a plurality of supporting members are disposed on the ligation ring.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the supporting member is embedded inside the ligation ring or protrudes from an outer surface of the ligation ring.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a plurality of the supporting pieces are uniformly distributed along a circumferential direction of the ligature ring.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a plurality of ligation rings are provided, and the plurality of ligation rings are sequentially sleeved on the outer peripheral surface of the ligation ring fixing member along the length direction of the ligation ring fixing member.

With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the ligation ring is rectangular in cross-section.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the ligation ring fixing piece is provided with a hanging hole at the ligation device connecting portion.

In a second aspect, a ligation device comprises a ligation ring assembly according to any one of the implementations of the first aspect.

One of the above technical solutions has at least one of the following advantages or beneficial effects: the ligation ring and the ligation ring fixing piece are combined to form an independent assembly, when the device is used, the device is directly connected with the ligation device through the ligation device connecting part, after the ligation ring on the ligation ring fixing piece is released by the ligation device, the ligation ring fixing piece is separated from the ligation device, and then the other assembly is replaced, so that the reciprocating operation is carried out. Meanwhile, the ligation ring does not need to be sleeved on an inner sleeve of the ligation device, and the ligation device can be assembled when needed, so that other device parts except the ligation ring and the ligation ring fixing piece can be repeatedly sterilized and used, and the cost is saved; the ligation ring of the utility model has large ligation strength and size, so that the ligation is firm and larger-size lesion can be ligated; the ligation ring is sleeved on the ligation ring fixing piece, and the ligation ring is released in a mode of horizontally pushing out the ligation ring, so that the form of the ligation ring is flexibly arranged, for example, the ligation ring can be arranged into a ligation band with a certain width, and more mucosal tissues can be ligated in a sleeving manner.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a structural isometric view of one embodiment of a toggle assembly of the present invention;

FIG. 2 is a top view of the structure of one embodiment shown in FIG. 1;

FIG. 3 is a cross-sectional view taken at A-A in FIG. 2;

FIG. 4 is an exploded view of the structure of one embodiment shown in FIG. 1;

FIG. 5 is a schematic view of a ligation band fixture configuration according to one embodiment shown in FIG. 1;

FIG. 6 is a schematic view of a ligation ring configuration of the embodiment shown in FIG. 1;

FIG. 7 is a schematic view of an alternative ligation ring configuration of the embodiment shown in FIG. 1;

figure 8 is a structural isometric view of another embodiment of a ligation ring assembly according to the invention;

FIG. 9 is a schematic view of a ligation ring assembly according to an embodiment of the invention in connection with a ligation device;

fig. 10 is a partial enlarged view of fig. 9 at B.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the utility model, the meaning of a plurality of is one or more, the meaning of a plurality of is more than two, and the meaning of more than two is understood as not including the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise explicitly defined, the terms "set", "install", "connect", and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1, 2 and 3, an embodiment of the present invention provides a ligation ring assembly, which includes a ligation ring 11 and a ligation ring fixing member 12, wherein the ligation ring fixing member 12 is in a cylindrical shape, a through hole is defined inside the ligation ring fixing member 12, and an outer peripheral surface is defined outside the ligation ring fixing member 12. The ligation ring fixing member 12 has a ligation device connecting portion 121 and a ligation ring connecting portion 122, that is, the outer peripheral surface of the ligation ring fixing member 12 includes at least two sections, one of the two sections, i.e., the ligation device connecting portion 121, is used for sleeving the ligation device 2, and the other section is used for sleeving the ligation ring 11. The ligation ring 11 has elasticity, and all or part of the ligation ring 11 is formed by elastic materials, so that the ligation ring has elasticity for realizing ligation by automatic folding. The ligation ring 11 in the stretched state is sleeved on the outer peripheral surface of the ligation ring connecting part 122, that is, the ligation ring 11 is expanded by the ligation ring fixing part 12, and when the ligation ring 11 is separated from the ligation ring fixing part 12, the ligation ring contracts under the action of its own elasticity, thereby achieving the function of ligation of the target object.

In this embodiment, the ligation band 11 and the ligation band holder 12 form an assembly 1 separate from the ligation device 2, the assembly being detachably connected to the ligation device 2 via a ligation device connection 121. The ligation ring 11 and the ligation ring fixing piece 12 are combined to form an independent component 1, and the component can be used as a disposable product and is manufactured and sold independently. When the assembly 1 is used, referring to fig. 9 and 10, the ligation device connecting part 121 is sleeved with the barrel body 21 of the ligation device 2, after the ligation device 2 releases the ligation ring 11 on the ligation ring fixing part 12, the ligation ring fixing part 12 is separated from the ligation device 2, and then another assembly is replaced, so that the operation is repeated. Except for the ligation ring 11 and the ligation ring fixing piece 12, the assembly 1 of the ligation device 2 can be repeatedly sterilized for use, so that the cost is saved and the waste is avoided.

Referring to fig. 9 and 10, in particular, the operation steps of the assembly 1 on the ligation device 2 are as follows: the proximal end of the ligation ring fixing piece 12 is sleeved on the inner side of the bung hole of the barrel body 21, the ligation ring 11 is sleeved on the distal end of the ligation ring fixing piece 12, and the ligation ring 11 is positioned on the outer side of the bung hole of the barrel body 21, namely, the ligation ring fixing piece 12 is partially sleeved in the barrel body 21 and partially extends out of the barrel body 21. The ligation ring 11 has a certain thickness, and the outer diameter of the ligation ring 11 is larger than the inner diameter of the opening of the barrel body 21, so that the barrel body 21 can push the ligation ring 11 away. When the assembly 1 is mounted on the ligation ring 11 release assembly, the ligation ring fixing piece 12 is embedded into the barrel body 21 until the edge of the ligation ring 11 just collides with the edge of the bung opening of the barrel body 21. When the telescopic device is released, the control component is connected with the ligation ring fixing piece 12 or the barrel body 21, the ligation ring fixing piece 12 and the barrel body 21 are relatively moved through the control component of the ligation device 2 device, so that the ligation ring fixing piece 12 retracts towards the inner side of the barrel body 21, the barrel body 21 pushes the ligation ring 11 out of the ligation ring fixing piece 12 in the retracting process, and the pushed-out ligation ring 11 retracts under the condition of no support of the ligation ring fixing piece 12 to sleeve a target object pulled into the barrel body 21. The mode of releasing the ligation ring 11 can be understood as a mode of horizontally pushing out to release the ligation ring, in the releasing process, the ligation ring 11 cannot be turned over, cannot be twisted, cannot be partially folded and the like, the ligation ring can be released according to the preset state of the ligation ring 11, and the reliability and the stability of ligation are greatly improved.

The surface of the ligation ring 11 is flat or is processed by a special structure at a local position, for example, in the embodiment shown in fig. 1-8, the inner surface of the ligation ring 11 is provided with the barbed protrusions 14, the barbed protrusions 14 form micro-pricks on the inner wall surface of the ligation ring 11, and after the ligation ring 11 is ligated to a target object, the barbed protrusions 14 will pierce the mucosal tissue, thereby increasing the ligation reliability. The inner surface of the ligation ring 11 is not limited to be provided with the barbed protrusions 14, but other alternative ways for increasing the adhesive fixation strength with the mucosal tissue are available, which aims to prevent the ligation ring 11 from slipping off the ligated mucosal tissue.

The protuberances 14 may be distributed or regionally distributed on the surface of the ligation ring 11, for example, in some embodiments, the inner surface of the ligation ring 11 may have a plurality of protuberances, and the protuberances 14 may be closely spaced in the protuberances. One or more protruding areas are arranged, and the protruding areas are uniformly or non-uniformly distributed along the circumferential direction of the ligation ring 11. The pricking ring fixing piece 12 can be designed in a targeted manner by adopting regionalized distribution of the pricking protrusions 14, referring to fig. 4 and 5, the pricking ring fixing piece 12 is provided with an avoidance notch 15 at a corresponding position of the pricking protrusion region, the pricking ring 11 sleeved on the pricking ring fixing piece 12 is provided with the pricking protrusions 14 at the avoidance notch 15, the pricking protrusions 14 are prevented from being broken and damaged by the pricking ring fixing piece 12, and a position space for the pricking protrusions 14 to be arranged is provided.

Referring to fig. 4 and 5, the avoiding gap 15 extends to the edge of the ligation ring connecting portion 122, so that when the ligation ring 11 is pushed out from the ligation ring fixing member 12, the pricking protrusion 14 is not damaged by the ligation ring fixing member 12, and the functional integrity of the pricking protrusion 14 is ensured.

The ligation ring 11 is in a strip shape, for example, in the embodiment shown in fig. 4 and 6, the cross section of the ligation ring 11 is rectangular, and when the ligation device 2 is pushed away from the ligation ring fixing member 12, the direction and the shape of the ligation ring 11 can be kept constant, so that poor ligation effect caused by ligation failure or displacement of a ligation part due to overturning of the ligation ring 11 can be avoided. According to the needs of the endoscopic ligation operation and the shape and size of the lesion, the shape and structure of the ligation ring 11 are not limited to a ribbon shape, for example, the section of the ligation ring 11 may be circular.

In some embodiments, the ligation ring 11 is provided with a plurality of support members 13, the support members 13 being harder than the resilient material of the ligation ring 11. The support member 13 helps to shape the elastic portion of the ligation ring 11, so that the ligation ring 11 can be pushed out by the barrel 21 more easily. The supporting member 13 is embedded inside the ligation ring 11 or protrudes from the outer surface of the ligation ring 11. The supporting members 13 are provided in one or more shapes, for example, in the embodiment shown in fig. 7, the supporting members 13 are protruded radially outward and embedded in the outer surface of the ligation ring 11, the supporting members 13 are uniformly distributed along the circumference of the ligation ring 11, and the protruded supporting members 13 may have a convex shape such as a rectangle, a circle, etc., and are harder to facilitate the ligation ring 11 to be pushed out from the ligation fixing member 12.

Referring to fig. 1 and 8, one or more binding rings 11 are arranged on the binding ring fixing member 12, when a plurality of binding rings 11 are arranged on the binding ring fixing member 12, the binding rings 11 are arranged in a plurality, and the binding rings 11 are sequentially sleeved on the outer peripheral surface of the binding ring fixing member 12 along the length direction of the binding ring fixing member 12, i.e. the binding device 2 can sequentially release a plurality of binding rings 11, so that the binding reliability is increased, repeated binding operation is avoided, and the working efficiency is improved.

Referring to fig. 4 and 5, in some embodiments, the ligation ring fixture 12 is provided with a hanging hole 123 at the ligation device connection portion 121. Referring to fig. 10, in order to release the ligation ring 11, the ligation device 2 is provided with a traction member 22, the distal end of the traction member 22 is connected with the hanging hole 123, when in use, the traction member 22 is pulled, and the traction member 22 drives the ligation ring fixing member 12 to move towards the proximal end of the ligation device 2, so that the pushing-off and the release of the ligation ring 11 are finally realized.

Referring to fig. 9, an embodiment of the present invention provides a ligation device 2, including the assembly 1 of any of the above embodiments. The ligation ring fixing piece 12 is sleeved on the inner side of the bung hole of the barrel body 21, and the cross-sectional shape of the ligation ring fixing piece 12 is matched with that of the barrel body 21, such as circular, oval, polygonal and the like. The ligation ring 11 on the peripheral surface of the ligation ring fixing piece 12 is positioned outside the edge of the opening of the barrel body 21, the ligation ring fixing piece 12 and the barrel body 21 are driven to move relatively, so that the ligation ring fixing piece 12 retracts towards the inner side of the barrel body 21, and the ligation ring 11 is separated from the ligation ring fixing piece 12 through the friction force or thrust applied to the ligation ring 11 by the barrel body 21.

In the description herein, references to the description of the term "example," "an embodiment," or "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (10)

1. A ligation ring assembly, comprising: including the cover and prick circle and cover and prick circle mounting, the cover is pricked the circle mounting and is the tube-shape, the cover is pricked the circle mounting and has the cover and prick ware connecting portion and the cover and prick circle connecting portion, the cover is pricked the circle and is tied the cover and be in the outer peripheral face of cover and prick circle connecting portion, the cover is pricked circle and cover and prick the circle mounting and form the subassembly that is independent of the cover and prick the ware, the subassembly passes through the cover is pricked ware connecting portion and cover and prick the ware and can dismantle with the.

2. The ligation ring assembly according to claim 1, wherein: the inner surface of the bundling ring is provided with a thorn bulge.

3. The ligation ring assembly according to claim 2, wherein: the inner surface of the bundling ring is provided with a plurality of pricking areas, and the pricking areas are closely distributed on the pricking areas.

4. The ligation ring assembly according to claim 3, wherein: the corresponding position of the bundling ring fixing piece in the thorn convex area is provided with an avoidance notch, and the avoidance notch extends to the edge of the bundling ring connecting part.

5. The ligation ring assembly according to claim 1, wherein: the ligation ring is provided with a plurality of supporting pieces.

6. The ligation ring assembly according to claim 5, wherein: the supporting piece is embedded in the bundling ring or protrudes out of the outer surface of the bundling ring.

7. The ligation ring assembly according to claim 5, wherein: the supporting pieces are uniformly distributed along the circumferential direction of the bundling ring.

8. The ligation ring assembly according to claim 1, wherein: the ligation ring is provided with a plurality of ligation rings, and the ligation rings are sequentially sleeved on the peripheral surface of the ligation ring fixing piece along the length direction of the ligation ring fixing piece.

9. The ligation ring assembly according to claim 1, wherein: the ligation ring fixing piece is provided with a hanging hole at the ligation device connecting part.

10. A ligation device is characterized in that: comprising the ligation ring assembly according to any one of claims 1 to 9.

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