Hemostatic clamping system

Abstract

The utility model relates to a hemostasis clamping system which comprises a far-end execution assembly and a transmission assembly, and the far-end execution assembly can be inserted into a body to conduct clamping hemostasis on target tissue. The transmission assembly is provided with a first transmission piece and a second transmission piece which can be locked, the first transmission piece and the second transmission piece can be locked by inserting the locking part of the second transmission piece into the locking groove of the petal piece of the first transmission piece, and therefore the second transmission piece can drive the first transmission piece and the clamp body to move synchronously. When the clamp body clamps a target tissue, the second transmission part is further pulled, the locking part drives the multiple petals to be stressed to deform in the direction away from each other, the locking part can be separated from the locking groove, and therefore the second transmission part is separated from the end execution assembly, and the clamping body is switched between the closed state and the open state. And the end execution assembly is convenient to replace.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a hemostatic clamping system. Background Technology

[0002] Hemostatic clips are commonly used in endoscopes. They are inserted into the body through the endoscope's forceps channel to directly clamp and close visible bleeding vessels and lesions. They have advantages such as minimal damage, rapid hemostasis, low rebleeding rate, few complications, and definite curative effect.

[0003] Most existing hemostatic clips are disposable. If multiple clips are needed for the same patient, multiple sets of products are required, which increases costs. There are also some hemostatic clips with replaceable clip heads, but their structure is more complex and inconvenient to operate. Utility Model Content

[0004] The purpose of this invention is to provide a novel hemostatic clamping system that is easy to replace clamps, has a simple structure, and is convenient to use.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A hemostatic clamping system, comprising:

[0007] A distal actuator insertable into the body, the distal actuator including a sleeve and a clamp body slidably disposed within the sleeve along an axial direction, the distal end of the clamp body being located outside the sleeve and the proximal end being located inside the sleeve, the clamp body including a pair of clamping arms, the clamp body having a closed state in which the clamping ends of the pair of clamping arms are close together to clamp tissue and an open state in which the clamping ends of the pair of clamping arms are far apart;

[0008] A transmission assembly includes a first transmission member whose distal end is connected to the clamp and a second transmission member detachably connected to the first transmission member. The proximal end of the first transmission member has at least two separate lobes, and the lobes are provided with locking grooves. The second transmission member is connected to a drive assembly and its distal end is a locking part controlled by the drive assembly. The locking part has a locked state in which it is engaged in the locking groove and has an interference fit with the lobes, and an unlocked state in which it is disengaged from the locking groove.

[0009] The transmission assembly of this invention has a lockable first transmission member and a second transmission member. The locking part of the second transmission member can be easily inserted into the locking groove of the petals of the first transmission member, thus locking the relative positions of the first and second transmission members. When the second transmission member is pulled or pushed, it can move synchronously with the first transmission member and the clamping body, allowing the clamping body to switch between a closed and open state. After the clamping body clamps the target tissue, further pulling of the second transmission member causes the locking part to deform the multiple petals away from each other, disengaging the locking part from the locking groove. This disengages the second transmission member from the first transmission member and the remote actuator. When the clamping body needs to be used again, the locking part can be inserted into the first transmission member of another remote actuator, which is very convenient. The above-mentioned design of the petals and locking part ensures both the stability of their connection and facilitates their disengagement.

[0010] Preferably, an axially extending slide is formed between the petals, and the inner diameter of the slide is smaller than the maximum outer diameter of the locking part. The slide facilitates the insertion and disengagement of the locking part, and by making the inner diameter of the slide smaller than the maximum outer diameter of the locking part, the locking part and the petals can be press-fitted, thereby ensuring the stability of their connection.

[0011] More preferably, the maximum outer diameter of the locking part is 1.1 to 1.5 times the inner diameter of the slide, and more preferably 1.2 to 1.4 times.

[0012] Preferably, the outer peripheries of the plurality of the lobes are located on the same cylindrical surface, and the diameter of the cylindrical surface is greater than or equal to the maximum outer diameter of the locking portion. This facilitates the unlocking and separation of the first and second transmission components.

[0013] Preferably, the locking part is a ball head.

[0014] Preferably, the hemostatic clamping system further includes a handle, a connecting tube connecting the handle and the clamp, and the drive assembly. The drive assembly includes an operating part slidably disposed on the handle along the axial direction and a cable disposed in the connecting tube. One end of the cable is connected to the operating part, and the other end is connected to the second transmission member.

[0015] More preferably, the hemostatic clamping system further includes a rotating component, the distal end of which is engaged with the clamp, and the proximal end of which is rotatably disposed on the connecting tube about the rotation axis of the connecting tube.

[0016] In some embodiments, the rotating member is detachably connected to the connecting pipe.

[0017] Preferably, the sleeve is provided with a blocking part to limit the movement stroke of the clamp body in the sleeve and prevent the transmission end of the clamp body from disengaging from the sleeve.

[0018] Preferably, the pair of clamping arms are integrally formed.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] This utility model's hemostatic clamping system includes a distal execution component and a transmission component. The distal execution component can be inserted into the body to clamp and stop bleeding in target tissue. The transmission component has a locking first transmission member and a locking second transmission member. By inserting the locking part of the second transmission member into the locking groove of the flap of the first transmission member, the first and second transmission members can be locked. Thus, when the second transmission member is pulled or pushed, it can move synchronously with the first transmission member and the distal execution component, thereby switching the clamp between a closed state and an open state to clamp the target tissue. After clamping the target tissue, further pulling the second transmission member causes the locking part to deform multiple flaps away from each other, thereby disengaging the locking part from the locking groove. This disengages the second transmission member from the first transmission member and the distal execution component, leaving the distal execution component in the body. When the clamp needs to be used again, the locking part can be inserted into the first transmission member of another distal execution component, which is very convenient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the hemostasis clamping system provided in Example 1;

[0022] Figure 2 for Figure 1 An enlarged diagram of part A in the diagram;

[0023] Figure 3 for Figure 2 A cross-sectional view on the BB side;

[0024] Figure 4 for Figure 1 A structural diagram of part A from another angle;

[0025] Figure 5 for Figure 1 Exploded view of part A in the diagram;

[0026] Figure 6 This is a schematic diagram of the transmission assembly provided in Example 1;

[0027] Figure 7 This is a structural schematic diagram of the transmission assembly provided in Embodiment 1 from another angle;

[0028] Figure 8 for Figure 7 A sectional view of the C-plane;

[0029] Figure 9 A cross-sectional view of the proximal portion of the hemostatic clamping system provided in Example 1;

[0030] Figure 10 A schematic diagram of the structure of the protective sleeve provided in Example 1;

[0031] Wherein: 1. Clamp body; 11. Clamp arm; 111. Clamping end; 112. Transmission end;

[0032] 2. Jacket; 21. Blocking part;

[0033] 3. Transmission assembly 3; 31. First transmission component; 311. Lobe; 312. Locking groove; 313. Slide rail; 32. Second transmission component; 321. Locking part;

[0034] 4. Handle;

[0035] 51. Operating unit; 52. Cable;

[0036] 6. Connecting tube; 61. Slender main body; 62. First connecting part; 621. Locking claw; 63. Second connecting part;

[0037] 7. Rotating component; 71. Protrusion;

[0038] 8. Protective cover; 81. Top cover; 82. Bottom cover;

[0039] d. Inner diameter. Detailed Implementation

[0040] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0041] In the description of the embodiments of this utility model, it should be understood that "distal end" refers to the end of the instrument or component away from the operator, and "proximal end" refers to the end of the instrument or component closer to the operator; "axial direction" refers to the direction parallel to the line connecting the centers of the distal and proximal ends of the instrument or component; "inner" and "outer" are positions defined by distance relative to the center of the instrument or component, where "inner" is the position closer to the center of the instrument or component, and "outer" is the position away from the center of the instrument or component; "upper" and "lower" refer to the orientation of the instrument in its actual use or working state. The above description of directional terms is only for the convenience of describing the embodiments of the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The foregoing disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model. To simplify the disclosure of the embodiments of this utility model, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the embodiments of this utility model. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0045] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0046] Example 1:

[0047] A hemostatic clamping system, such as Figures 1 to 9As shown, it includes a distal actuation component and a transmission component 3. The distal actuation component can be inserted into the body through, for example, the working channel of an endoscope to reach the target tissue to be treated. It includes a sleeve 2 and a clamp 1 slidably disposed within the sleeve 2 along the axial direction. The distal end of the clamp 1 is located outside the sleeve 2, and the proximal end is located inside the sleeve 2. The clamp 1 includes a pair of clamping arms 11 and has a closed state and an open state. When the clamp 1 is in the closed state, the clamping ends 111 (i.e., the distal ends) of the pair of clamping arms 11 are close together to clamp the tissue; when the clamp 1 is in the open state, the clamping ends 111 of the pair of clamping arms 11 are far apart from each other and allow tissue to enter between them. In this embodiment, the pair of clamping arms 11 are integrally formed, and their transmission ends 112 (i.e., the proximal ends) are connected to the transmission component 3 and are slidably moved along the axial direction by the transmission component 3, thereby switching between the closed state and the open state. To prevent the transmission end 112 of the clamping body 1 from disengaging from the clamping sleeve 2, a blocking part 21 is provided on the clamping sleeve 2 to limit the movement stroke of the clamping body 1 within the clamping sleeve 2. In this embodiment, the blocking part 21 is formed on the clamping sleeve 2 and protrudes towards the axis of the clamping sleeve 2 to block the distal end of the transmission assembly 3 and prevent the distal end of the transmission assembly 3 from disengaging from the clamping sleeve 2.

[0048] The transmission assembly 3 includes a first transmission member 31 and a second transmission member 32. The distal end of the first transmission member 31 is connected to the clamping body 1, and the other end (i.e., the proximal end) is detachably connected to the second transmission member 32. Specifically, the proximal end of the first transmission member 31 has at least two separate flaps 311 (in this embodiment, there are two flaps 311), and each flap 311 has a locking groove 312. The distal end of the second transmission member 32 is a locking part 321, which has a locked state where it is engaged within the locking groove 312 and press-fitted with the flaps 311, and an unlocked state where it is disengaged from the locking groove 312. The arrangement of the flap 311 and the locking part 321 can ensure the connection stability of the first transmission member 31 and the second transmission member 32, so that the second transmission member 32 can carry the first transmission member 31 and the end actuator to move synchronously, thereby switching the clamp 1 between the closed state and the open state. It can also facilitate the disengagement of the first transmission member 31 and the second transmission member 32. When the second transmission member 32 is pulled further with a greater force, the locking part 321 can drive the flap 311 to deform and move in a direction away from each other (outward), and the locking part 321 can disengage from the locking groove 312.

[0049] Furthermore, a sliding track 313 extending axially is formed between the multiple petals 311, and the inner diameter d of the sliding track 313 is smaller than the maximum outer diameter of the locking part 321. The sliding track 313 facilitates the insertion and disengagement of the locking part 321. By making the inner diameter d of the sliding track 313 smaller than the maximum outer diameter of the locking part 321, the locking part 321 and the petals 311 can be press-fitted, thereby ensuring the connection stability of the two. In this embodiment, the locking part 321 is a ball head, and the outer diameter of the ball head is larger than the inner diameter d of the sliding track 313 and is about 1.3 times the inner diameter d of the sliding track 313, so as to ensure the connection stability of the first transmission member 31 and the second transmission member 32. Furthermore, the outer peripheries of the multiple petals 311 are on the same cylindrical surface, and the diameter of the cylindrical surface is greater than or equal to the maximum outer diameter of the locking part 321.

[0050] The hemostatic clamping system also includes a handle 4, a connecting tube 6 connecting the handle 4 and the clamp 2, and a drive assembly. The drive assembly includes an operating part 51 slidably mounted on the handle 4 along its axial direction and a cable 52 disposed within the connecting tube 6. One end of the cable 52 is connected to the operating part 51, and the other end is connected to a second transmission member 32. The connecting tube 6 includes an elongated main body 61 and a first connecting part 62 and a second connecting part 63 fixedly connected to both ends of the elongated main body 61. The second connecting part 63 is rotatably connected to the handle 4, and the first connecting part 62 is rotatably connected to the clamp 2 via a rotating member 7. For ease of installation, the distal end of the rotating member 7 is engaged with the clamp 2, and the proximal end is detachably connected to the first connecting part 62 of the connecting tube 6. Specifically, the near end of the rotating part 7 has a cylindrical protrusion 71, and the far end of the first connecting part 62 has a plurality of locking claws 621 arranged in sequence around its circumference. The locking claws 621 have recesses that cooperate with the protrusion 71. The rotational connection between the two can be achieved by locking the protrusion 71 into the recess of the locking claw 621, which is very convenient.

[0051] The hemostatic clamping system of this embodiment also provides a protective sleeve 8, which includes an upper cover 81 and a lower cover 82 that can be opened or closed relative to each other. The lower cover 82 is provided with a receiving space for accommodating a remote execution component, which is detachably disposed within the protective sleeve 8.

[0052] The aforementioned hemostasis clamping system is partially replaceable, and some components can be reused multiple times, resulting in low operating costs. Furthermore, the hemostasis clamping system has a simple structure, is easy to operate, and has low manufacturing costs.

[0053] Working principle:

[0054] In use, the operating part 51 is pulled proximally, and the cable 52 moves the transmission assembly 3 and the end effector assembly axially, so that most of the clamping arm 11 enters the clamping sleeve 2 and switches to the closed state. The end effector assembly is inserted into the body near the target tissue to be clamped through the working channel of the endoscope (or any other insertion device).

[0055] Upon reaching the target tissue, the operating unit 51 is pushed distally to push most of the clamping arm 11 out of the clamping sleeve 2, thereby switching the clamping body 1 to the open state. As needed, the handle 4 is rotated, causing the operating unit 51 to rotate along with the cable 52 and the transmission assembly 3, which in turn rotates the distal execution assembly for position adjustment, thus receiving the target tissue between the pair of clamping arms 11. Pulling the operating unit 51 causes the clamping arms 11 to clamp the target tissue and switch to the closed state. Further pulling the operating unit 51 causes the locking part 321 of the second transmission member 32 to drive the flap 311 of the first transmission member 31 to deform outwards, disengaging the locking part 321 from the flap 311, leaving the distal execution assembly and the first transmission member 31 inside the body.

[0056] If multiple remote actuators are to be used, the locking part 321 is inserted into the locking groove 312 of the flap 311 of the first transmission member 31 on another remote actuator, and the above action is performed again.

[0057] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hemostatic clamping system, characterized in that, include: A distal actuator that can be inserted into the body, the distal actuator comprising a sleeve (2) and a clamp (1) slidably disposed within the sleeve (2) along the axial direction, the distal end of the clamp (1) being located outside the sleeve (2) and the proximal end being located inside the sleeve (2), the clamp (1) comprising a pair of clamping arms (11), the clamp (1) having a closed state in which the clamping ends (111) of the pair of clamping arms (11) are close together to clamp tissue and an open state in which the clamping ends (111) of the pair of clamping arms (11) are far apart; The transmission assembly (3) includes a first transmission member (31) whose distal end is connected to the clamp (1) and a second transmission member (32) detachably connected to the first transmission member (31). The proximal end of the first transmission member (31) has at least two separate lobes (311), and the lobes (311) are provided with locking grooves (312). The second transmission member (32) is connected to the drive assembly and its distal end is a locking part (321) controlled by the drive assembly. The locking part (321) has a locked state in which it is engaged in the locking groove (312) and has an interference fit with the lobes (311), and an unlocked state in which it is disengaged from the locking groove (312).

2. The hemostatic clamping system according to claim 1, characterized in that, A slide (313) extending axially is formed between the lobes (311), and the inner diameter (d) of the slide (313) is smaller than the maximum outer diameter of the locking part (321).

3. The hemostatic clamping system according to claim 2, characterized in that, The maximum outer diameter of the locking part (321) is 1.1 to 1.5 times the inner diameter (d) of the slide (313).

4. The hemostatic clamping system according to claim 1, characterized in that, The outer peripheries of the plurality of the lobes (311) are on the same cylindrical surface, the diameter of which is greater than or equal to the maximum outer diameter of the locking part (321).

5. The hemostatic clamping system according to claim 1, characterized in that, The locking part (321) is a ball head.

6. The hemostatic clamping system according to claim 1, characterized in that, The hemostatic clamping system also includes a handle (4), a connecting tube (6) connecting the handle (4) and the clamp (2), and the drive assembly. The drive assembly includes an operating part (51) slidably disposed on the handle (4) and a cable (52) disposed in the connecting tube (6). One end of the cable (52) is connected to the operating part (51), and the other end is connected to the second transmission member (32).

7. The hemostatic clamping system according to claim 6, characterized in that, The hemostatic clamping system also includes a rotating component (7), the distal end of which is engaged with the clamp (2), and the proximal end is rotatably disposed on the connecting tube (6) about the rotation axis of the connecting tube (6).

8. The hemostatic clamping system according to claim 7, characterized in that, The rotating component (7) is detachably connected to the connecting pipe (6).

9. The hemostatic clamping system according to claim 1, characterized in that, The sleeve (2) is provided with a blocking part (21) to limit the movement stroke of the clamp (1) in the sleeve (2).

10. The hemostatic clamping system according to claim 1, characterized in that, The pair of clamping arms (11) are integrally formed.

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