CN111466989A - Ligation device - Google Patents

Abstract

The invention discloses a ligation device, comprising a ligation ring assembly, including a ligation ring and a ligation ring fixing piece. On the outer peripheral surface of the ligature ring fixing member; the ligature ring release assembly includes a barrel body and a manipulation part, and the ligature ring release assembly has a negative pressure suction channel or a clamping part to provide the target to be ligated from the barrel body. The force introduced by the barrel mouth, the ferrule fixing member is sleeved on the inner side of the barrel mouth of the barrel body, and the control part can drive the ferrule fixing member and the barrel body to move relative to the barrel body to retract the tie ring fixing member to the inner side of the barrel body to Disconnect the ferrule from the ferrule holder. The strong suction or clamping force increases the effect of lifting the lesion, and the self-elasticity of the ligature ring is used to automatically tighten the ligation, which is easier to operate and reduces the risk of surgery.

Description

A ligature device

technical field

The invention is used in the field of medical instruments, in particular to a ligature device.

Background technique

Early gastrointestinal cancer and gastrointestinal submucosal mass are the most common digestive tract tumors. Early diagnosis and early treatment of tumors are of great significance to the prognosis of patients, families and society. With the development of endoscopic technology, endoscopic minimally invasive surgery can minimally invasively remove these tumors and achieve clinical curative effect. Currently, this type of endoscopic minimally invasive surgery mainly includes endoscopic submucosal dissection (ESD), endoscopic full-thickness resection (EFR), endoscopic submucosal tumor excision and endoscopic tunnel resection. (STER). These surgical methods have high technical requirements for operators and high risks, making it difficult to popularize them in most hospitals. In particular, there is controversy about endoscopic minimally invasive resection of submucosal tumors in the digestive tract. (1) ESD, EFR and STER resection of tumors is difficult to avoid without damaging the capsule of the tumor, and it is difficult to achieve R0 resection (R0 is resection). (2) The surgical risk is high, especially EFR, and the perforation treatment is challenging, and in severe cases, it can endanger the patient's life. Therefore, it is particularly important for the popularization of technology to explore a simple and quick operation, good treatment effect, and safe operation method.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a ligature device, with which the minimally invasive surgery of the device is used, and the more complicated process of minimally invasive surgery such as ESD, EFR and STER is abandoned. , its operation is simple and fast, which greatly reduces the operation time and intraoperative complications; the device can lift mucosal lesions, especially submucosal tumors, by means of suction or clamping, and then ligature and excise the root of the lesion. , This method ensures that the body of the lesion is not directly contacted, and the integrity of the lesion, especially the submucosal mass, is guaranteed as much as possible. This greatly improves the probability of RO resection; the device is removed by ligation, and the operation is simple, without complicated operation steps, and the technology is easy to popularize.

The technical scheme adopted by the present invention to solve its technical problems is:

In a first aspect, a ligator device, comprising

The ligature ring assembly includes a ligature ring and a ligature ring fixing member, the ligature ring fixing member is in the shape of a cylinder, the ligature ring has elasticity, and the ligature ring in a stretched state is wrapped around the ligature ring the outer peripheral surface of the fixture;

The ligation ring release assembly includes a barrel body, a negative pressure suction channel and a manipulation part, and the negative pressure suction channel is communicated with the barrel body, so as to provide a mechanism for inhaling the target object to be ligated through the barrel mouth of the barrel body. force, the ligature ring fixing member is sleeved on the inside of the barrel mouth of the barrel body, and the manipulation component can drive the ligature ring fixing member and the barrel body to move relative to each other to make the ligature ring fixing member Retracting to the inside of the barrel body to disengage the ferrule from the ferrule fixing member.

A second aspect, a ligature device, comprising

The ligature ring assembly includes a ligature ring and a ligature ring fixing member, the ligature ring fixing member is in the shape of a cylinder, the ligature ring has elasticity, and the ligature ring in a stretched state is wrapped around the ligature ring the outer peripheral surface of the fixture;

The ligation ring release assembly includes a barrel body, a clamping part and a manipulation part. The clamping part extends into the barrel body to provide the function of pulling the target object to be ligated through the barrel mouth of the barrel body force, the tie-ring fixing member is sleeved on the inner side of the barrel mouth of the barrel body, and the manipulation component can drive the tie-ring fixing member and the barrel to move relative to the The inner side of the barrel body is retracted to disengage the ferrule from the ferrule fixing member.

In some implementations of the first aspect or the second aspect, the proximal end of the ligature ring fixing member is sleeved on the inner side of the barrel mouth of the barrel body, and the ligature ring fixing member is sleeved on the ligature ring fixing member The ligature ring is located outside the barrel mouth of the barrel body, and the outer diameter of the ligature ring is larger than the inner diameter of the barrel mouth of the barrel body.

In some implementations of the first aspect or the second aspect, the inner surface of the ligature ring is provided with a thorn protrusion, and the ligature ring fixing member is provided with an escape notch at a corresponding position of the thorn protrusion.

In some implementations of the first aspect or the second aspect, the ligature ring is provided with several support members.

In some implementations of the first aspect or the second aspect, the support member is embedded inside the ligature ring or protrudes from the outer surface of the ligature ring.

In some implementations of the first aspect or the second aspect, a plurality of the ligature rings are provided, and the plurality of the ligature rings are sequentially sleeved on the ligature ring fixing member and the relative movement direction of the barrel body. The outer peripheral surface of the ligature ring fixing member.

In some implementations of the first aspect or the second aspect, the manipulation member includes a traction member, the barrel body is provided with a traction member through hole, and the traction member extends into the traction member through the traction member through hole. inside the barrel and connected with the ferrule fixing member.

In some implementations of the first aspect or the second aspect, a hook is provided at the distal end of the pulling member, and a hanging hole for connecting the hook is provided on the ligature ring fixing member.

In some implementations of the first aspect or the second aspect, the inner wall of the barrel is provided with a groove for guiding the traction member.

In some implementations of the first aspect or the second aspect, further comprising

an endoscope, the barrel body is provided with an endoscope sleeve, and the distal end of the endoscope is sleeved with the endoscope sleeve;

an endoscope fixing part, which is detachably connected to the proximal end of the endoscope;

a control part sleeve, connected between the endoscope fixing part and the barrel body, the control part is inserted into the control part sleeve, and the proximal end of the control part is in the endoscope The outside of the fixture is attached to the handle.

In some implementations of the first aspect or the second aspect, a manipulation member channel is provided on the endoscope fixing member, the manipulation member channel is connected with the manipulation member sleeve, and a manipulation member channel is provided in the manipulation member channel. There are control parts and limit parts.

In some implementations of the first aspect or the second aspect, the endoscope fixing member is provided with a clip slot and a tie capable of confining the handle of the endoscope in the clip slot.

In some implementations of the first aspect, further comprising

an endoscope, the barrel body is provided with an endoscope sleeve, and the distal end of the endoscope is sleeved with the endoscope sleeve;

an endoscope fixing piece, which is detachably connected to the proximal end of the endoscope, and is provided with a first negative pressure channel interface on the endoscope fixing piece;

a control part sleeve, connected between the endoscope fixing part and the barrel body, the control part is inserted into the control part sleeve, and the proximal end of the control part is in the endoscope The outer connecting handle of the fixing part;

Wherein, the barrel body is provided with a second negative pressure channel interface, and the negative pressure suction channel includes a pipeline connecting the first negative pressure channel interface and the second negative pressure channel interface.

In some implementations of the second aspect, further comprising

an endoscope, the barrel body is provided with an endoscope sleeve, and the distal end of the endoscope is sleeved with the endoscope sleeve;

an endoscope fixing part, which is detachably connected to the proximal end of the endoscope;

a control part sleeve, connected between the endoscope fixing part and the barrel body, the control part is inserted into the control part sleeve, and the proximal end of the control part is in the endoscope The outer connecting handle of the fixing part;

Wherein, the clamping member extends into the barrel through the endoscope working channel of the endoscope.

One of the above technical solutions has at least one of the following advantages or beneficial effects: when in use, the barrel mouth of the barrel of the ligator device is brought close to and aligned with the target that needs to be ligated, and then, under negative pressure or traction Next, introduce the target into the barrel. After the target object is completely introduced into the barrel body, the ligature ring fixing member and the barrel body are moved relative to each other through the manipulation part of the ligation device, so that the ligature ring fixing member is retracted to the inside of the barrel body, and finally the The ferrule is detached from the ferrule fixing member, and the pushed ferrule is retracted without being supported by the ferrule fixing member to cover the target introduced into the barrel.

With the help of the minimally invasive surgery of the device, the more complicated procedures of minimally invasive surgery such as ESD, EFR and STER are abandoned, and the operation is simple and fast, which greatly reduces the operation time and intraoperative complications; In this way, the mucosal lesions, especially the submucosal tumor, are lifted and removed, and then the root of the lesion is ligated and excised. This method ensures that the body of the lesion is not directly contacted, and the integrity of the lesion, especially the submucosal tumor, is ensured as much as possible. sex. This greatly improves the probability of RO resection; the device is removed by ligation, and the operation is simple, without complicated operation steps, and the technology is easy to popularize.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

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

Fig. 1 is an axonometric view of the overall structure of an embodiment of the present invention;

Fig. 2 is a front view of the structure of an embodiment shown in Fig. 1;

Fig. 3 is an exploded view of the structure of an embodiment shown in Fig. 1;

FIG. 4 is a structural axonometric view of the ligature ring release assembly and the ligature ring assembly of the embodiment shown in FIG. 1 after being connected;

FIG. 5 is a schematic structural diagram of an embodiment of the endoscope fixing member shown in FIG. 1;

Fig. 6 is the structural axonometric view of the barrel of an embodiment shown in Fig. 1;

Fig. 7 is the structural front view of the barrel of an embodiment shown in Fig. 1;

Figure 8 is a sectional view at A-A in Figure 7;

FIG. 9 is a structural axonometric view of a ligature ring assembly according to an embodiment of the present invention;

Figure 10 is a top view of the ligature ring assembly of one embodiment shown in Figure 9;

Figure 11 is a sectional view at B-B in Figure 10;

Figure 12 is an exploded view of the ligature ring assembly of one embodiment shown in Figure 9;

FIG. 13 is a schematic structural diagram of a ligature ring fixing member according to an embodiment shown in FIG. 9;

Figure 14 is a schematic structural diagram of a ligature ring according to an embodiment shown in Figure 9;

15 is a schematic structural diagram of a ligature ring according to another embodiment of the present invention;

Figure 16 is a structural axonometric view of a ligature ring assembly according to another embodiment of the present invention;

Figure 17 is a front view of the structure of the ligature release assembly of one embodiment shown in Figure 1;

Fig. 18 is a partial enlarged view at C in Fig. 17;

Figure 19 is a perspective view of the overall structure of another embodiment of the present invention;

Figure 20 is a front view of the overall structure of an embodiment shown in Figure 19;

Figure 21 is an exploded view of the overall structure of an embodiment shown in Figure 19;

Figure 22 is a structural axonometric view of the ligature ring release assembly and the ligature ring assembly of the embodiment shown in Figure 19 after being connected;

Fig. 23 is an axonometric view of the structure of the endoscope fixing member of one embodiment shown in Fig. 19;

FIG. 24 is an axonometric view of the barrel structure of an embodiment shown in FIG. 19 .

Detailed ways

This part will describe the specific embodiments of the present invention in detail, and the preferred embodiments of the present invention are shown in the accompanying drawings. Each technical feature and overall technical solution of the invention should not be construed as limiting the protection scope of the invention.

In the present invention, if there is a description of a direction (up, down, left, right, front and rear), it is only for the convenience of describing the technical solution of the present invention, rather than indicating or implying that the technical features referred to must have specific characteristics Orientation, construction and operation in a particular orientation, and therefore should not be construed as limiting the invention.

In the present invention, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding", etc. are understood as not including this number; "above", "below" and "within" " etc. are understood to include the original number. In the description of the present invention, if it is described that "first" and "second" are only used for the purpose of distinguishing technical features, it should not be understood as indicating or implying relative importance or implying the number of indicated technical features or Implicitly indicates the order of the indicated technical features.

In the present invention, unless otherwise clearly defined, words such as "set", "install" and "connect" should be understood in a broad sense, for example, it may be directly connected or indirectly connected through an intermediate medium; it may be a fixed connection or a The detachable connection can also be integrally formed; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be the internal communication between the two elements or the interaction relationship between the two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solutions.

The embodiment of the present invention provides a ligature device, the ligator device includes a ligature ring assembly 1 and a ligature ring release assembly 2, the ligature ring assembly 1 and the ligature ring release assembly 2 cooperate with each other, and finally the ligature Tie the ring 11 to the target. The specific structures of the ligature ring assembly 1 and the ligature ring release assembly 2 will be described in detail below.

9-12 , the ferrule assembly 1 includes a ferrule 11 and a ferrule fixing member 12. The ferrule fixing member 12 is cylindrical, and the ferrule fixing member 12 defines a through hole through the interior. The outside of the tie-ring fixing member 12 defines an outer peripheral surface on which the ferrule 11 is sleeved, and the tie-ring fixing member 12 may be formed of plastic or metal. The ligature ring 11 has elasticity, and all or part of the ligature ring is formed of elastic material, so that it has the elastic force to automatically fold to realize the ligation. The ligature ring 11 in the stretched state is sleeved on the outer peripheral surface of the ligature ring fixing member 12 , that is, the ligature ring 11 is stretched by the ligature ring fixing member 12 , and when the ligature ring 11 is separated from the ligature ring fixing member 12 , shrink under the action of its own elastic force, and then realize the function of ligating the target. The annular and elastic ligature ring 11 is automatically retracted to realize the ligation of the target object, during which there is no need for buckles, the operation is faster, and the occurrence of problems such as loosening of the ligature ring 11 is avoided.

For the above-mentioned ligature ring assembly 1, the embodiment of the present invention provides various types of ligature ring release assemblies 2 to cooperate with it.

In some embodiments, the ligation ring release assembly 2 uses the principle of negative pressure suction to inhale the target, thereby realizing ligation. 1, 2, 3 and 4, the ligature release assembly 2 includes a barrel 21, a negative pressure suction channel 22 and a manipulation part 23. One end of the barrel 21 has a barrel mouth, and the inside of the barrel 21 forms a suction inner The negative pressure suction channel 22 communicates with the barrel body 21 to provide a force for sucking the target object to be ligated through the barrel mouth of the barrel body 21 . The ferrule fixing member 12 is sleeved on the inner side of the barrel mouth of the barrel body 21 , and the cross-sectional shape of the ferrule fixing member 12 matches that of the barrel body 21 , such as circular, oval, polygonal, and the like. The ligature ring 11 on the outer peripheral surface of the ligature ring fixing member 12 is located outside the edge of the barrel mouth of the barrel body 21 , and may also be located between the barrel body 21 and the ligature ring fixing member 12 . The control part 23 is connected with the ligature ring fixing part 12 or the barrel body 21, and the control part 23 can drive the ligature ring fixing part 12 and the barrel body 21 to move relatively so that the ligature ring fixing part 12 retracts to the inside of the barrel body 21, and then passes through the The friction force or pushing force exerted by the barrel 21 on the ligature ring 11 disengages the ligature ring 11 from the ligature ring fixing member 12 . In this way, the ligation ring 11 is pushed out in translation, the initial setting state of the ligation ring 11 will not be changed, and the stability of the ligation implementation and the reliability of the ligation effect are ensured.

When using this embodiment, first install the ligature ring assembly 1 on the ligature ring release assembly 2, and then move the barrel mouth of the barrel body 21 of the ligature device close to and align with the target to be ligated, and then, A negative pressure is formed in the suction cavity of the barrel body 21 through the negative pressure suction channel 22 , and the target object is sucked into the barrel body 21 under the suction of the negative pressure. After the target object is completely sucked into the barrel body 21 , the ligature ring fixing member 12 and the barrel body 21 are moved relative to each other through the manipulation part 23 of the ligature device, so that the ligature ring fixing member 12 is retracted toward the inner side of the barrel body 21 . Finally, the ligature ring 11 is detached from the ligature ring fixing member 12, and the pushed ligature ring 11 retracts without being supported by the ligature ring fixing member 12 to cover the target introduced into the barrel 21. the root of the thing. In this embodiment, the principle of negative pressure is used to realize the precise grasping of the target object, during which the suction state of the target object can be controlled by setting the size, depth and degree of negative pressure of the barrel 21 . Moreover, the automatic contraction of the annular and elastic ligature ring realizes the ligation of the target object, during which there is no need for buckles, the operation is faster, and the occurrence of problems such as loosening of the ligature ring is avoided. The inner and outer diameters of the barrel body 21 and the inner and outer diameters of the ligature ring fixing member 12 can be manufactured and processed according to the size range of the ligation lesion, which is convenient for suction ligation and excision of different sizes.

In some embodiments, the ligation ring release assembly 2 uses the principle of clamping and pulling to pull the target into the barrel 21, thereby realizing ligation. 19 , 20 , 21 , and 22 , the ligature release assembly 2 includes a barrel 21 , a clamping part 24 and a manipulation part 23 . The distal end of the clamping part 24 is provided with a collet; A control handle is provided at the proximal end, and the control handle can drive the chuck at the distal end to open and close, so as to exert a clamping mechanical force on the target. One end of the barrel body 21 has a barrel mouth, a clamping cavity is formed inside the barrel body 21, and the clamping member 24 extends into the barrel body 21 and extends from the barrel body 21 to clamp the target, so as to provide a clamping cavity for the 11 to be ligated. The force that the target object is pulled in by the barrel mouth of the barrel body 21 . The ferrule fixing member 12 is sleeved on the inner side of the barrel mouth of the barrel body 21 , and the cross-sectional shape of the ferrule fixing member 12 matches that of the barrel body 21 , such as circular, oval, polygonal, and the like. The ligature ring 11 on the outer peripheral surface of the ligature ring fixing member 12 is located outside the edge of the barrel mouth of the barrel body 21 , and may also be located between the barrel body 21 and the ligature ring fixing member 12 . The control part 23 is connected with the ligature ring fixing part 12 or the barrel body 21, and the control part 23 can drive the ligature ring fixing part 12 and the barrel body 21 to move relatively so that the ligature ring fixing part 12 retracts to the inside of the barrel body 21, and then passes through the The frictional force or thrust exerted by the barrel body 21 on the ligature ring disengages the ligature ring from the ligature ring fixing member 12 .

When using this embodiment, first install the ligature ring assembly 1 on the ligature ring release assembly 2, and then move the barrel mouth of the barrel body 21 of the ligature device close to and align with the target to be ligated, and then, The clamping part 24 is opened, and after the clamping part 24 tightly clamps the target, the target is pulled into the clamping cavity of the barrel body 21 . After the target object is completely pulled into the barrel body 21, the ligature ring fixing member 12 and the barrel body 21 are moved relative to each other through the manipulation part 23 of the ligation device device, so that the ligature ring fixing member 12 is moved toward the inner side of the barrel body 21. retracted, and finally the ligature ring 11 is detached from the ligature ring fixing member 12 , and the pushed ligature ring 11 retracts without being supported by the ligature ring fixing member 12 and is sheathed and pulled into the barrel 21 the target. This embodiment utilizes the clamping member 24 to directly grasp the target object by clamping. During this period, the pulling-in state of the target object can be controlled by adjusting the size and depth of the barrel body 21 and the pulling degree of the clamping member 24 . Moreover, the automatic contraction of the annular and elastic ligature ring 11 is used to realize the ligation of the target object, during which there is no need for buckles, the operation is faster, and the occurrence of problems such as loosening of the ligature ring 11 is avoided. The inner and outer diameters of the barrel body 21 and the inner and outer diameters of the ligature ring fixing member 12 can be manufactured and processed according to the size range of the ligation lesion, which is convenient for clamping and ligation removal of different sizes.

9 , 10 , 11 , 17 and 18 , the proximal end of the ligature ring fixing member 12 is sleeved on the inner side of the barrel mouth of the barrel body 21 , and the ligature ring is sleeved on the distal end of the ligation ring fixing member 12 , The ligature ring 11 is located outside the barrel opening of the barrel body 21 , that is, the ligature ring fixing member 12 is partially sleeved in the barrel body 21 and partially protrudes out of the barrel body 21 . The ligature ring 11 has a certain thickness, and the outer diameter of the ligature ring 11 is larger than the inner diameter of the barrel mouth of the barrel body 21 to ensure that the barrel body 21 can push the ligature ring 11 away. When the ligature ring assembly 1 is installed on the ligature ring release assembly 2 , the ligature ring fixing member 12 is embedded in the barrel 21 until the edge of the ligature ring 11 just touches the barrel mouth edge of the barrel 21 . When releasing, the manipulation part 23 is connected with the ligature ring fixing part 12 or the barrel body 21 , and the ligature ring fixing part 12 and the barrel body 21 are moved relative to each other through the manipulation part 23 of the ligation device device, so that the ligature ring fixing part 12 is retracted to the inside of the barrel body 21. During the retracting process, the barrel body 21 pushes out the ferrule 11 from the ferrule fixing member 12, and the pushed ferrule 11 is supported by the ferrule fixing member 12. In this case, it retracts to cover the object pulled into the barrel 21 . It can be understood that the ligature ring fixing member 12 can also be completely sleeved in the barrel body 21. When the ligature ring fixing member 12 and the barrel body 21 move relative to each other, the friction force of the ligature ring 11 by the barrel body 21 is used. The release of the ligature ring 11 is achieved.

Referring to FIG. 9 and FIG. 14 , in some embodiments, the ligature ring 11 is annular, and the ligature ring 11 has a flat outer peripheral surface. The ligature ring 11 has a simple structure and lower cost.

In some embodiments, a plurality of support members are provided on the ligature ring, and the hardness of the support members is greater than that of the elastic material of the ligature ring. The support part helps to shape the elastic part of the ligature ring, so that the ligature ring is more convenient to be pushed out by the barrel body. The support member is embedded inside the ligature ring or protrudes from the outer surface of the ligature ring, and one or more support members 13 are provided. For example, in the embodiment shown in FIG. 15 , a plurality of support members 13 protrude outward in the radial direction. It is inlaid on the outer surface of the ligature ring 11, and a plurality of supports 13 are evenly distributed along the circumferential direction of the ligature ring 11. The raised supports 13 can be in the shape of a rectangle, a circle, etc., and are relatively hard. It is helpful for the ligature ring 11 to be pushed out from the ligature ring fixing member 12 .

Referring to Figure 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, in some embodiments, the inner surface of the ligature ring 11 is provided with a thorn protrusion 14, and the thorn protrusion 14 can be provided with one or more sections, The multi-section thorn protrusions 14 are uniformly or non-uniformly distributed along the circumference of the ligature ring. The thorn protrusions 14 form micro-thorns on the inner wall surface of the ligation ring 11. After the ligation ring 11 is ligated on the target, the thorn protrusions 14 will penetrate into the mucosal tissue, thereby increasing the reliability of the ligation. Correspondingly, the ligature ring fixing member 12 is provided with an avoidance gap 15 at the corresponding position of the thorn protrusion 14, and the ligature ring 11 sleeved on the ligature ring fixing member 12, the thorn protrusion 14 is located at the position of the avoidance gap 15 to avoid the thorn protrusion 14. The fixing member 12 of the ligature ring is damaged, and the space for the arrangement of the thorns is increased.

The ligature ring 11 and the ligature ring fixing member 12 are combined to form the ligature ring assembly 1, which is used as a one-time use. Referring to FIGS. 9 and 16 , one or more ligature rings 11 are provided on the ligature ring fixing member 12 . When multiple ligature rings 11 are arranged on the ligature ring fixing member 12 , the plurality of ligature rings 11 are ligated along the ligature. The ring fixing member 12 and the barrel body 21 are sequentially sleeved on the outer peripheral surface of the ligating ring fixing member 12 in the relative movement direction. That is, it can release a plurality of ligature rings 11 in sequence, which can increase the reliability of ligation, avoid repeated ligation operations, and improve work efficiency.

The manipulation component 23 is connected with the barrel body 21 or the ferrule fixing member 12 , and is used to drive the barrel body 21 or the ferrule fixing member 12 to move, and finally realize the retraction of the ferrule fixing member 12 into the barrel body 21 . In some embodiments, referring to FIG. 6 , FIG. 17 , and FIG. 18 , the manipulation member 23 includes a traction member 231 , such as a metal or non-metallic wire such as steel wire, and one or more traction members 231 are provided. Two parts 231 are provided, and the two traction parts 231 are symmetrically distributed, so that the ligature ring fixing part 12 is balanced and stressed, and the movement is more stable and smooth. The barrel body 21 is provided with a pulling member through hole 211 , and the pulling member 231 extends into the barrel body 21 through the pulling member through hole 211 and is connected to the tie-ring fixing member 12 . Wherein, when releasing the ligature ring 11 , the pulling member 231 is pulled, and the pulling member 231 drives the ligature ring fixing member 12 to retract into the barrel body 21 , during which the barrel body 21 pulls the ligature outside the ligature ring fixing member 12 . The ring 11 is peeled off, and finally the release of the ligature ring 11 is realized.

Since the ligature ring assembly 1 is for one-time use, it needs to be fitted and installed with the ligature ring release assembly 2 before use. , the distal end of the traction member 231 is provided with a hook 232, and the ligature ring fixing member 12 is provided with a hanging hole 121 for connecting the hook 232. When fitting and installing, the traction member 231 is pushed so that the hook 232 at the distal end of the traction member 231 is removed from the barrel. The pulling member of the body 21 protrudes through the hole 211 . The hooks 232 are used to hang the hanging holes 121 on the ferrule fixing member 12 , and then the pulling member 231 is pulled back, so that the ferrule fixing member 12 is pulled into the barrel body 21 .

Further, referring to FIGS. 7 and 8 , the inner wall of the barrel body 21 is provided with a groove 212 for guiding the traction member 231, and the groove 212 communicates with the traction member through hole 211 for guiding and limiting the traction member 231 and improving the traction member. The smoothness and smoothness of 231 traction.

In some embodiments, the ligator device further includes an endoscope 3, an endoscope fixing member 25 and a steering member sleeve 26, see FIG. 4 and FIG. 22, the number of the steering member sleeve 26 corresponds to the number of the traction member , the control part sleeve 26 is connected between the endoscope fixing member 25 and the barrel body 21 to form a whole, which is convenient for use with the endoscope 3. By setting the endoscope 3, the ligature ring assembly 1 and the ligature The loop release assembly 2 can be delivered into the body along with the endoscope 3, improving the accessibility of the entire device. It can be understood that the endoscope 3 is not necessary, that is, when the target object to be ligated can be directly reached, the ligation can be directly realized.

Referring to FIGS. 3 , 19 and 21 , an endoscope 3 is an existing device in the prior art, and the endoscope 3 has a wedge-shaped handle portion and an endoscope working channel 31 .

The endoscope 3 is fixed and detachably connected to the handle of the endoscope 3 , see FIGS. 5 and 23 , in some embodiments, the endoscope fixing member 25 is provided with a slot 251 and a handle capable of attaching the endoscope 3 The tether 252 is defined in the card slot 251 . The clamping slot 251 and the handle portion of the endoscope 3 adopt a profiling design, which facilitates the fitting and connection of the endoscope 3 on the endoscope fixing member 25 .

6 and 24, the barrel body 21 is provided with an endoscope sleeve 213, and the distal end of the endoscope 3 is tightly sleeved with the endoscope sleeve 213 to provide visual information of the target object and provide clipping The holding member 24 passes through the working channel of the endoscope 3 .

Referring to Figure 1, Figure 2, Figure 3, Figure 19, Figure 20, Figure 21, through the endoscope fixing member 25 clamped to the endoscope handle and the endoscope sleeve 213 sleeved on the distal end of the endoscope, the sleeve The tying device is mounted on the endoscope 3 to form a whole, and then, together with the endoscope 3, is introduced into the human body.

Referring to FIG. 17 , the manipulation member 23 is inserted into the manipulation member sleeve 26, and the proximal end of the manipulation member 23 is connected to the outside of the endoscope fixing member 25 with a handle 232, and the handle 232 can realize the pulling action of a plurality of manipulation members 23 together, Easy to operate. The handle 232 can be designed in various shapes. For example, in the embodiment shown in FIG. 3 , the handle 232 has an arc-shaped recess to avoid the endoscope 3 on one side.

5, 23, the endoscope fixing member 25 is provided with a control part channel 254, the control part channel is connected with the control part sleeve 26, the control part 23 is passed through the control part channel 254, the control part sleeve 26, the control part One end of the component 23 is connected to the handle 232 , and the other end is connected to the ferrule fixing member 12 . 1 and 19, the control member channel 254 is provided with a control member 23 limit member 233, the limit member 233 can be a rubber plug, a friction block, etc., which is sleeved on the control member 23 of the traction member 231, for example, to control the The part 23 provides a friction limit, which ensures that the manipulation part 23 does not move freely.

Referring to FIGS. 5 and 6 , in combination with the embodiment using the negative pressure suction channel 22 , the endoscope fixing member 25 is provided with a first negative pressure channel interface 253 , and the barrel body 21 is provided with a second negative pressure channel interface 214 . Referring to FIG. 4 , the negative pressure suction channel 22 includes a pipeline connecting the first negative pressure channel interface 253 and the second negative pressure channel interface 214. One or more pipelines are provided, and together with the endoscope 3, are sent into the human body, and then The port at the proximal end of the pipeline is connected to a negative pressure device to form a negative pressure environment in the suction lumen of the barrel body 21 . Of course, the negative pressure suction channel 22 can also use the endoscope working channel 31 of the endoscope in addition to the way of separately setting the pipeline connecting the first negative pressure channel interface 253 and the second negative pressure channel interface 214. Alternatively, the working channel 31 of the endoscope is combined with a pipe provided outside, and the negative pressure suction channel 22 is connected to a negative pressure suction device, which makes up for the problem that the suction force of the negative pressure sucked through the working channel of the endoscope is small, and realizes the size reduction. Suction ligation of lesions with larger suction resistance, such as larger or deeper tumor origin.

Referring to FIGS. 19 and 20 , in combination with the embodiment in which the clamping member 24 is used, the clamping member 24 extends into the barrel body 21 through the endoscope working channel 31 of the endoscope 3 . The holding member 24 is sent into the human body together with the endoscope 3 , and then the handle 232 is operated through the holding member 24 at the proximal end of the endoscope 3 to hold and pull the target into the barrel 21 .

The use method of the ligator device is further described below with respect to the embodiment using the negative pressure suction channel 22 and the embodiment using the clamping member 24:

1. The embodiment of using the negative pressure suction channel 22

1. Assembly, that is, when the device needs to be used, first assemble the parts outside the human body;

The ligature ring assembly 1 is installed on the ligature ring release assembly 2: the ligature ring 11 is sleeved on the distal end of the ligature ring fixing member 12, and the thorn protrusion 14 on the inner side of the ligature ring 11 is partially aligned with the ligature ring fixing member 12. Avoid gap 15. The pulling member 231 is pushed by the handle 232 at the proximal end of the manipulation member 23 , so that the hook 232 at the distal end of the pulling member 231 protrudes from the groove 212 on the inner wall of the barrel 21 . Use the hook 232 to hang the hanging hole 121 on the ligature ring fixing member 12, and then pull back the traction member 231 through the handle 232, so that the ligature ring fixing member 12 is pulled into the suction barrel until the edge of the ligature ring 11 just touches to the lower edge of the barrel 21 . This indicates that the ferrule assembly 1 is in place.

The ligation device is installed on the endoscope 3 through the endoscope fixing member clamped on the handle 232 of the endoscope 3 and the endoscope sleeve 213 sleeved on the distal end of the endoscope 3, and then, together with the endoscope , was sent into the human body.

2. Banding process

Outside the body, the external negative pressure suction device of the negative pressure suction channel 22 on the ligator device. The barrel 21 of the ligation device is brought close to and aligned with the target to be ligated, and then a negative pressure is formed in the suction cavity of the barrel 21 through the negative pressure suction channel 22. The material is sucked into the barrel 21. After the target object is completely sucked into the barrel body 21 , the ligature ring fixing member 12 and the barrel body 21 are moved relative to each other through the manipulation part 23 of the ligature device, so that the ligature ring fixing member 12 is retracted toward the inner side of the barrel body 21 . Finally, the ligature ring 11 is detached from the ligature ring fixing member 12, and the pushed ligature ring 11 retracts without being supported by the ligature ring fixing member 12 to cover the target introduced into the barrel 21. thing. For the ligature ring assembly 1 installed with multiple ligature rings 11 , the pulling member 231 can be continuously pulled by the handle 232 of the ligature device, so that the ligature ring fixing member 12 continues to move upward, releasing the plurality of ligature rings in sequence.

3. After the ligation is completed, take out the device

After completing the above operations, the ligature ring 11 is successfully released and the target object is ligated. Then, the ligator 11 release assembly is withdrawn from the human body together with the endoscope.

4. Repeat ligation

After all the ligature rings 11 on one ligature ring fixing member 12 are used up, if ligation is still required, repeat the steps 1-3 above to achieve further ligation of the same target or another target. And so on.

2. The embodiment using the clamping member 24

1. Assembly, that is, when the device needs to be used, first assemble the parts outside the human body;

The ligature ring assembly 1 is installed on the ligature ring release assembly 2: the ligature ring 11 is sleeved on the distal end of the ligature ring fixing member 12, and the thorn protrusion 14 on the inner side of the ligature ring 11 is partially aligned with the ligature ring fixing member 12. Avoid gap 15. The pulling member 231 is pushed by the handle 232 at the proximal end of the manipulation member 23 , so that the hook 232 at the distal end of the pulling member 231 protrudes from the groove 212 on the inner wall of the barrel 21 . Use the hook 232 to hang the hanging hole 121 on the ferrule fixing member 12, and then pull back the traction member 231 through the handle 232, so that the ferrule fixing member 12 is pulled into the suction barrel until the edge of the tie ring just touches the until the lower edge of the barrel body 21 . This indicates that the ferrule assembly 1 is in place.

The ligation device is installed on the endoscope 3 through the endoscope fixing member clamped on the handle 232 of the endoscope 3 and the endoscope sleeve 213 sleeved on the distal end of the endoscope 3, and then, together with the endoscope , was sent into the human body.

2. Banding process

Bring the barrel mouth of the barrel 21 of the ligation device close to and align the target to be ligated, then open the clamping part 24, and after the clamping part 24 tightly clamps the target, pull the target into the barrel inside the clamping lumen of the body 21 . After the target object is completely pulled into the barrel body 21, the ligature ring fixing member 12 and the barrel body 21 are moved relative to each other through the manipulation part 23 of the ligation device device, so that the ligature ring fixing member 12 is moved toward the inner side of the barrel body 21. retracted, and finally the ligature ring is detached from the ligature ring fixing member 12, and the pushed ligature ring is retracted without being supported by the ligature ring fixing member 12 to cover the target pulled into the barrel 21. thing. For the ligature ring assembly 1 installed with multiple ligature rings, the pulling member 231 can be continuously pulled through the handle 232 of the ligature device, so that the ligature ring fixing member 12 continues to move upward, and the plurality of ligature rings 11 are released in sequence.

3. After the ligation is completed, take out the device

After completing the above operations, the ligature ring 11 is successfully released and the target object is ligated. Then, the ligator release assembly is withdrawn from the body along with the endoscope.

4. Repeat ligation

After all the ligature rings on one ligature ring fixing member 12 are used up, if ligation is still required, the above steps 1-3 are repeated to achieve further ligation of the same target or another target. And so on.

In the embodiment of the present invention, the operation mode of knotting and ligation in the prior art is abandoned, and the self-elasticity of the ligature ring is used to automatically tighten to realize the ligation, the operation is more convenient, and the potential risk caused by the rupture of the ligature wire is avoided. .

In the description of this specification, a description with reference to the terms "example", "embodiment" or "some embodiments" etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one aspect of the present invention in one embodiment or example. In this specification, schematic representations of the above terms 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.

Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present invention, and these equivalent modifications or replacements are included in the claims of the present application. within a limited range.

Claims (15)

1. A ligation device is characterized in that: comprises that

The ligation ring assembly comprises a ligation ring and a ligation ring fixing piece, the ligation ring fixing piece is cylindrical, the ligation ring has elasticity, and the ligation ring in a stretched state is sleeved on the outer peripheral surface of the ligation ring fixing piece;

the bundling ring releasing assembly comprises a barrel body, a negative pressure suction channel and an operation and control component, wherein the negative pressure suction channel is communicated with the barrel body to provide an acting force for sucking a target object to be bundled from a barrel opening of the barrel body, the bundling ring fixing piece is sleeved on the inner side of the barrel opening of the barrel body, and the operation and control component can drive the bundling ring fixing piece and the barrel body to move relatively to enable the bundling ring fixing piece to retract towards the inner side of the barrel body so as to separate the bundling ring from the bundling ring fixing piece.

2. A ligation device is characterized in that: comprises that

The ligation ring assembly comprises a ligation ring and a ligation ring fixing piece, the ligation ring fixing piece is cylindrical, the ligation ring has elasticity, and the ligation ring in a stretched state is sleeved on the outer peripheral surface of the ligation ring fixing piece;

the bundling ring releasing assembly comprises a barrel body, a clamping component and an operating component, wherein the clamping component extends into the barrel body to provide an acting force for pulling a target object to be bundled in from a barrel opening of the barrel body, the bundling ring fixing piece is sleeved on the inner side of the barrel opening of the barrel body, and the operating component can drive the bundling ring fixing piece and the barrel body to move relatively to enable the bundling ring fixing piece to retract towards the inner side of the barrel body so as to separate the bundling ring from the bundling ring fixing piece.

3. The ligation device according to claim 1 or 2, wherein: the near end of the bundling ring fixing piece is sleeved on the inner side of a barrel opening of the barrel body, the bundling ring is sleeved on the far end of the bundling ring fixing piece, the bundling ring is located on the outer side of the barrel opening of the barrel body, and the outer diameter of the bundling ring is larger than the inner diameter of the barrel opening of the barrel body.

4. The ligation device according to claim 3, wherein: the inner surface of the bundling ring is provided with a thorn protrusion, and the bundling ring fixing piece is provided with an avoidance notch at the position corresponding to the thorn protrusion.

5. The ligation device according to claim 3, wherein: the ligation ring is provided with a plurality of supporting pieces.

6. The ligation device 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 device according to claim 1 or 2, 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 relative movement direction of the ligation ring fixing piece and the barrel body.

8. The ligation device according to claim 1 or 2, wherein: the control part comprises a traction piece, the barrel body is provided with a traction piece through hole, and the traction piece penetrates through the traction piece through hole to extend into the barrel body and is connected with the ligation ring fixing piece.

9. The ligation device according to claim 8, wherein: the far end of the traction piece is provided with a hook, and the bundling ring fixing piece is provided with a hanging hole connected with the hook.

10. The ligation device according to claim 8, wherein: the inner wall of the barrel body is provided with a groove for guiding the traction piece.

11. The ligation device according to claim 1 or 2, wherein: also comprises

The barrel body is provided with an endoscope sleeve, and the distal end of the endoscope is sleeved with the endoscope sleeve;

the endoscope fixing piece is detachably connected with the near end of the endoscope;

the control component sleeve is connected between the endoscope fixing piece and the barrel body, the control component penetrates through the control component sleeve, and the proximal end of the control component is connected with a handle on the outer side of the endoscope fixing piece.

12. The ligation device according to claim 11, wherein: the endoscope fixing piece is provided with a control component channel, the control component channel is connected with the control component sleeve, and a control component limiting component is arranged in the control component channel.

13. The ligation device according to claim 11, wherein: the endoscope fixing piece is provided with a clamping groove and a tying belt capable of limiting a handle of the endoscope in the clamping groove.

14. The ligation device according to claim 1, wherein: also comprises

The barrel body is provided with an endoscope sleeve, and the distal end of the endoscope is sleeved with the endoscope sleeve;

the endoscope fixing piece is detachably connected with the near end of the endoscope, and a first negative pressure channel interface is arranged on the endoscope fixing piece;

the control component sleeve is connected between the endoscope fixing piece and the barrel body, the control component penetrates through the control component sleeve, and the proximal end of the control component is connected with a handle on the outer side of the endoscope fixing piece;

the barrel body is provided with a second negative pressure channel interface, and the negative pressure suction channel comprises a pipeline connected with the first negative pressure channel interface and the second negative pressure channel interface.

15. The ligation device according to claim 2, wherein: also comprises

The barrel body is provided with an endoscope sleeve, and the distal end of the endoscope is sleeved with the endoscope sleeve;

the endoscope fixing piece is detachably connected with the near end of the endoscope;

the control component sleeve is connected between the endoscope fixing piece and the barrel body, the control component penetrates through the control component sleeve, and the proximal end of the control component is connected with a handle on the outer side of the endoscope fixing piece;

wherein, the clamping part extends into the barrel body through an endoscope working channel of the endoscope.

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