A closed clamp

Abstract

The utility model belongs to the technical field of medical instruments, and specifically relates to a closing clamp, comprising a sleeve, a clamp, an intermediate sleeve and a push-pull assembly. The rear end of the sleeve is provided with a first locking portion and a second locking portion. The clamp comprises two clips, each of which comprises a clamping section and a control section. The control section is provided with a first matching portion. The intermediate sleeve is detachably connected to the sleeve, and comprises a second matching portion located at the front end. The push-pull assembly comprises two pull rods, and the two clips are located between the two pull rods. The two pull rods gradually approach each other from front to back until the two are fitted together. An abutment protrusion is protruded from the middle part of each pull rod. The utility model utilizes two pull rods to clamp the two clips in the middle to prevent the locking wings of the clamp from approaching the locking groove, and there is no need to additionally provide a clip fixer. The pull rod also utilizes the abutment protrusion thereon to drive the intermediate sleeve to move backward synchronously to realize the separation of the sleeve and the intermediate sleeve. The pull rod can realize multiple functions through a simple structure, and improves the assembly efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a closing clip. Background Art

[0002] Closure clips are also called hemostatic clips, which are usually used in various digestive tract systems to clamp bleeding sites and promote wound closure.

[0003] A Chinese patent with application number CN201520317758.8 discloses a clip-type repetitive opening and closing clamp, which includes an outer tube assembly, a clip and a push-pull assembly. The clip has two clips, and the tail ends of the clips have locking wings. The pull rod is located between the two clips. A clip holder is also provided on the outer tube assembly. The clip holder has two blocking wings, and each blocking wing is located in the area between the corresponding locking wing and the outer tube assembly to block the contact between the locking wing and the locking step. Therefore, a clip holder needs to be added in this application to limit the position of the locking wing, and the structure is relatively complicated. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to solve the problem that the closing clip in the prior art needs to add a clip fixer to limit the position of the locking wing on the clip piece, and the structure is relatively complicated, a closing clip is provided.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a closing clip, comprising:

[0006] The sleeve has a first locking portion and a second locking portion at its rear end;

[0007] A clamp, comprising two clips that can move closer to or farther from each other and a connecting pin that penetrates between the two clips and is used to connect the two clips, each clip comprising a clamping section at the front end and a control section at the rear end, the control section being provided with a first matching section for matching with a first locking section to fix the clamp to the sleeve;

[0008] The intermediate sleeve is detachably connected to the sleeve and includes a second mating portion at the front end for mating with the second locking portion;

[0009] The push-pull assembly includes two pull rods detachably connected to the clamp, two clips are located between the two pull rods, and the two pull rods gradually move closer from front to back until they fit together, and the middle part of each pull rod protrudes with an abutment protrusion for abutting against the middle sleeve to drive the middle sleeve to move backward synchronously to force the second matching part to disengage from the second locking part;

[0010] Furthermore, each pull rod includes a hook portion located at the front end and in a curved hook shape, the hook portion has a notch, and the notches on the two hook portions are in opposite directions.

[0011] Furthermore, the first locking portion is two symmetrically arranged locking grooves provided on the sleeve, and the first matching portion is a locking wing provided on the control section for snapping into the locking grooves.

[0012] Furthermore, the second locking portion is two oppositely arranged slots formed on the sleeve, and the second matching portion is a hook matched with the slots.

[0013] Furthermore, the hook includes a hook head at the front end and a connecting rod for connecting the hook head and the middle sleeve, and the thickness of the connecting rod is smaller than the thickness of the middle sleeve.

[0014] Furthermore, the pull rod is provided with a rod portion at the rear end thereof abutting against the protrusion, and fixing tubes are sleeved outside the two rod portions. The middle sleeve is provided with a central hole along its axial direction for the fixing tube to pass through.

[0015] Furthermore, at least one of the two ends of the connecting pin in the axial direction protrudes radially to form a limiting portion.

[0016] The beneficial effects of the utility model are as follows: the utility model utilizes two pull rods to clamp the two clips in the middle to prevent the locking wings of the clamp from approaching the locking groove, and there is no need to set up a clip fixer separately. The pull rod also utilizes the abutment protrusions thereon to drive the middle sleeve to move backward synchronously to achieve the separation of the sleeve and the middle sleeve. The pull rod can realize multiple functions through a simple structure, and the simple structure improves the assembly efficiency.

[0017] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model from a first viewing angle;

[0021] Figure 3 It is a cross-sectional view of the utility model from a second viewing angle after the clip is removed;

[0022] Figure 4 is a three-dimensional schematic diagram of the tie rod;

[0023] Figure 5 It is a three-dimensional schematic diagram of the middle set;

[0024] In the figure:

[0025] 1. Sleeve; 101. Locking groove; 102. Card slot;

[0026] 2. Clip; 201. Clamping section; 202. Control section; 2021. Locking wing;

[0027] 3. Connecting pin; 301. Limiting part;

[0028] 4. Intermediate sleeve; 401. Hook; 4011. Hook head; 4012. Connecting rod; 402. Center hole;

[0029] 5. Pull rod; 501. Abutment protrusion; 502. Hook; 5021. Notch; 503. Rod.

[0030] 6. Fixed tube. DETAILED DESCRIPTION

[0031] The utility model is now described in further detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model, and the directions and references (for example, up, down, left, right, etc.) can only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0032] like Figure 1 and Figure 2 As shown, a closing clamp comprises a sleeve 1, a clamp, an intermediate sleeve 4 and a push-pull assembly;

[0033] The rear end of the sleeve 1 is provided with a first locking portion and a second locking portion;

[0034] The clamp comprises two clamps 2 which can be moved closer to or farther from each other and a connecting pin 3 which is inserted between the two and is used to connect the two. Each clamp 2 comprises a clamping section 201 at the front end and a control section 202 at the rear end. The clamping section 201 extends out of the sleeve 1 and is used to clamp tissue. The control section 202 is movably arranged inside the sleeve 1 and is provided with a first matching section which is used to match with the first locking section to fix the clamp to the sleeve 1. When the first locking section is disengaged from the first matching section, the clamp 2 is in a free state and can move forward and backward inside the sleeve 1. When the first locking section is matched and locked with the first matching section, the clamp 2 and the sleeve 1 are relatively fixed.

[0035] The intermediate sleeve 4 is detachably connected to the sleeve 1, and includes a second matching portion located at the front end for matching with the second locking portion; when the second locking portion matches and locks with the second matching portion, the intermediate sleeve 4 is relatively fixed to the sleeve 1, and when the second locking portion is disengaged from the second matching portion, the intermediate sleeve 4 is separated from the sleeve 1;

[0036] The push-pull assembly comprises two pull rods 5 detachably connected to the clamp, two clips 2 are located between the two pull rods 5, and the two pull rods 5 gradually approach each other from front to back until the two are in contact with each other; when the push-pull assembly and the clamp are in a connected state, the clamp moves forward and backward under the pulling force of the push-pull assembly, and during this process, the two pull rods 5 clamp the clips 2 in the middle to prevent the first matching part of the clamp from approaching the first locking part; when the push-pull assembly and the clamp are in a disengaged state, the pull rods 5 release the restraint on the clips 2, and the first matching part can approach the first locking part under the action of its own elastic force to fix the clips 2 and the sleeve 1; the middle part of each pull rod 5 is protruding with an abutment protrusion 501 for abutting with the intermediate sleeve 4 to drive the intermediate sleeve 4 to move backward synchronously to force the second matching part to disengage from the second locking part.

[0037] When the pull rod 5 is connected to the clamp, it can drive the clamp to move forward and backward. When the clamp moves backward, the two clamps 2 move closer to each other to clamp the tissue. When the clamp moves forward, the two clamps 2 move away from each other to release the tissue. The clamp can be repeatedly opened and closed during the forward and backward movement of the clamp. When it is found that the tissue clamping position is not suitable during the clamping process, the clamping position can be adjusted by repeatedly opening and closing the clamp 2.

[0038] When the pull rod 5 moves backward and separates from the clamp, the first matching part is released and approaches the first locking part under the action of its own elastic force, thereby fixing the clip 2 and the sleeve 1; when the pull rod 5 continues to move backward until the abutment protrusion 501 abuts against the intermediate sleeve 4, it drives the intermediate sleeve 4 to move backward synchronously, and the second matching part is forced to disengage from the second locking part, thereby realizing the separation of the intermediate sleeve 4 and the sleeve 1.

[0039] In some examples, each pull rod 5 includes a hook portion 502 located at the front end and in the shape of a curved hook. The hook portion 502 is sleeved on the connecting pin 3 and is provided with a notch 5021 for elastic deformation. The notches 5021 on the two hook portions 502 are in opposite directions to ensure the connection strength between the pull rod 5 and the connecting pin 3.

[0040] In some examples, the first locking portion is two symmetrically arranged locking grooves 101 opened on the sleeve 1, and the first matching portion is a locking wing 2021 arranged on the control section 202 for snapping into the locking groove 101. When the pull rod 5 is disengaged from the connecting pin 3, the pull rod 5 releases the constraint on the clip 2, and the two locking wings 2021 snap into the locking groove 101 under the elastic force of the clip 2.

[0041] In some examples, the second locking portion is two oppositely arranged slots 102 opened on the sleeve 1, and the second matching portion is a hook 401 matching with the slot 102. The slot 102 and the locking slot 101 are spaced apart along the circumferential direction of the sleeve 1. The hook 401 can be elastically deformed under the action of tension to disengage from the slot 102 to separate the intermediate sleeve 4 from the sleeve 1.

[0042] In some examples, the hook 401 includes a hook head 4011 at the front end and a connecting rod 4012 for connecting the hook head 4011 and the middle sleeve 4. The hook head 4011 is used to cooperate with the slot 102. The thickness of the connecting rod 4012 is less than the thickness of the middle sleeve 4, which is more conducive to the deformation of the hook 401.

[0043] In some examples, the pull rod 5 is provided with a rod portion 503 at the rear end of the abutment protrusion 501, and the two rod portions 503 are externally fixed with a fixing tube 6. The two pull rods 5 can be driven to move synchronously by pushing and pulling the fixing tube 6. The intermediate sleeve 4 is provided with a center hole 402 along its axial direction for the fixing tube 6 to pass through. When the abutment protrusion 501 abuts against the opening of the center hole 402, the pull rod 5 can drive the intermediate sleeve 4 to move backward synchronously.

[0044] In some examples, at least one of the two ends of the connecting pin 3 in the axial direction protrudes radially to form a limiting portion 301 .

[0045] Working principle:

[0046] When the pull rod 5 is connected to the clamp, it can drive the clamp to move forward and backward. When the clamp moves backward, the two clamps 2 move closer to each other to clamp the tissue. When the clamp moves forward, the two clamps 2 move away from each other to release the tissue. The clamp can be repeatedly opened and closed during the forward and backward movement of the clamp. When it is found that the tissue clamping position is not suitable during the clamping process, the clamping position can be adjusted by repeatedly opening and closing the clamp 2.

[0047] When the pull rod 5 moves backward and separates from the connecting pin 3, the locking wing 2021 is released, and under the action of its own elastic force, it approaches the locking groove 101 and then snaps into the locking groove 101 to fix the clip 2 and the sleeve 1; when the pull rod 5 continues to move backward until the abutting protrusion 501 abuts against the opening of the center hole 402, it drives the intermediate sleeve 4 to move backward synchronously, and the hook 401 is elastically deformed under the force and disengaged from the slot 102, thereby realizing the separation of the intermediate sleeve 4 and the sleeve 1.

[0048] The above-mentioned ideal embodiments of the utility model are inspirations. Through the above-mentioned description, relevant staff can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of the utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A closing clip, characterized in that: include: A sleeve (1) having a first locking portion and a second locking portion at its rear end; A clamp comprising two clamps (2) which can move closer to or farther from each other and a connecting pin (3) inserted between the two for connecting the two, each clamp (2) comprising a clamping section (201) located at the front end and a control section (202) located at the rear end, the control section (202) being provided with a first matching section for matching with a first locking section to fix the clamp to a sleeve (1); An intermediate sleeve (4) is detachably connected to the sleeve (1) and comprises a second matching portion located at a front end for matching with the second locking portion; The push-pull assembly comprises two pull rods (5) detachably connected to the clamp, two clips (2) are located between the two pull rods (5), and the two pull rods (5) gradually move closer from front to back until they fit together, and the middle part of each pull rod (5) protrudes with an abutment protrusion (501) for abutting against the middle sleeve (4) to drive the middle sleeve (4) to move backward synchronously to force the second matching part to disengage from the second locking part.

2. A closing clip according to claim 1, characterized in that: Each pull rod (5) comprises a hook portion (502) located at the front end and in a curved hook shape, the hook portion (502) having a notch (5021), and the notches (5021) on the two hook portions (502) are in opposite directions.

3. A closure clip according to claim 1, characterized in that: The first locking portion is two symmetrically arranged locking grooves (101) formed on the sleeve (1), and the first matching portion is a locking wing (2021) arranged on the control section (202) for snapping into the locking grooves (101).

4. A closure clip according to claim 1, characterized in that: The second locking portion is two oppositely arranged slots (102) formed on the sleeve (1), and the second matching portion is a hook (401) matched with the slots (102).

5. A closing clip according to claim 4, characterized in that: The hook (401) comprises a hook head (4011) located at the front end and a connecting rod (4012) used to connect the hook head (4011) and the middle sleeve (4), and the thickness of the connecting rod (4012) is smaller than the thickness of the middle sleeve (4).

6. A closure clip according to claim 1, characterized in that: The pull rod (5) is provided with a rod portion (503) at the rear end of the abutting protrusion (501), and a fixing tube (6) is sleeved outside the two rod portions (503). The intermediate sleeve (4) is provided with a central hole (402) along its axial direction for the fixing tube (6) to pass through.

7. A closure clip according to claim 1, characterized in that: At least one of the two ends of the connecting pin (3) in the axial direction protrudes in the radial direction to form a limiting portion (301).

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