CN110664456A - Hemostatic clamp - Google Patents

Abstract

The present invention provides a hemostatic clip, which includes a shedding piece, a handle, a pulling mechanism and a tripping structure. The shedding part includes a collet and a collet tube, the collet includes a clamping part and a bending section, and the collet tube and the bending section cooperate with each other to realize the clamping action of the clamping part; the pulling mechanism is connected with one end of the bending section. It is used for moving the collet to realize the cooperation between the collet and the collet tube; the tripping structure is arranged between the shedding piece and the hand-held part for shedding the shedding piece.

Description

hemostatic clip

technical field

The invention relates to the technical field of surgical medical instruments, in particular to a hemostatic clip.

Background technique

The hemostatic clip is a non-surgical hemostasis tool that is used in conjunction with the digestive tract, is installed in the middle, and uses mechanical clamping to clamp the wound to achieve hemostasis. Compared with surgical treatment, it has the characteristics of minimally invasive, rapid hemostasis, low rebleeding and complication probability, and has definite curative effect.

Most of the existing hemostatic clips adopt a one-time tripping structure. After the clip is clamped to the wound, the clip is tripped and released, so that the clip remains at the wound, and other parts are released from the body, thereby achieving hemostasis. The structure of the existing hemostatic clip is relatively complicated, and the processing is difficult.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a hemostatic clip with simpler structure and simpler processing.

The technical solution adopted to solve the above technical problems is as follows: the present invention provides a hemostatic clip, which includes a shedding part, a hand-held part, a pulling mechanism and a tripping structure. The shedding part includes a collet and a collet tube, the collet includes a clamping part and a bending section, and the collet tube and the bending section cooperate with each other to realize the clamping action of the clamping part; the pulling mechanism is connected with one end of the bending section. It is used for moving the collet to realize the cooperation between the collet and the collet tube; the tripping structure is arranged between the shedding piece and the hand-held part for shedding the shedding piece.

Optionally, the bending section is U-shaped and is movably arranged in the collet tube, the connecting part between the clamping part and the bending section has an arc-shaped transition section, and the part of the clamping part close to the sawtooth is bent inwardly. , an inwardly protruding fitting wing is arranged between the arc-shaped transition section and the bending part.

Optionally, the end of the collet has cooperating serrations, and the serration angle of the serrations is greater than or equal to 90 degrees.

Optionally, the tripping structure includes a tripping sleeve, the tripping sleeve has a through hole passing through the inside thereof, the pulling mechanism passes through the through hole, and the pulling mechanism slides in the through hole and can withstand one end of the through hole so that the tripping sleeve is pulled. The release sleeve is provided with a first buckle and a second buckle; the drop-off piece has a first buckle structure that cooperates with the first buckle; the hand-held part has a second buckle that cooperates with the second buckle structure; the first buckle and the second buckle of the release sleeve clamp the first and second clamping structures respectively, so that the falling-off piece is connected with the hand-held part, and the pulling mechanism withstands the sliding and pulling mechanism. When the tripping sleeve moves, the first snap is released from the first engaging structure, thereby disconnecting the connection between the detaching part and the hand-held part, and realizing the tripping of the hemostatic clip.

Optionally, one end of the pulling mechanism is provided with a tie rod head, the through hole of the release sleeve includes a first channel and a second channel arranged in sequence along the pulling direction, the tie rod head can slide in the first channel, and the outer diameter of the tie rod head is greater than The inner diameter of the second channel.

Optionally, the end of the bending section has a connection hole matched with the tie rod head, and the connection hole is formed by the intersection of two crisscross holes.

Optionally, the pulling mechanism further includes a pin shaft, the collet tube has a pin shaft hole that cooperates with the pin shaft, and the pin shaft is penetrated in the bending section and penetrated in the pin shaft hole for fixing the collet and the collet. Tube.

Optionally, the release sleeve includes a release piece and a release body, and the gap distance between the release pieces is greater than the width of the release piece.

Optionally, the shedding piece includes a first tube sleeve, the hand-held part includes a second tube sleeve, the first tube sleeve has a first snap-fit structure that fits with the first snap, and the second tube cover has a second snap-fit structure. The second snap-fit structure; the first snap-fit and the second snap-fit of the release sleeve respectively clamp the first snap-fit structure and the second snap-fit structure, so that the first tube jacket and the second tube jacket are connected.

Optionally, the pulling mechanism includes a clamp block, a sleeve, a pull rod and a slider, the pull rod is connected with one end of the bending section, the slider and the clamp block are fixedly connected, the clamp block is used to fix the connection rod, the sleeve has a chute, the clamp The blocks can be slidably connected in the chute, and the sliding block can be slidably connected in the chute by sliding the slider to realize the movement of the pull rod.

The hemostatic clip provided by the present invention is composed of four parts, which are a shedding part, a hand-held part, a pulling mechanism and a tripping structure. The shedding parts remain in the body after falling off, and the shedding parts are made of biological anti-corrosion materials, such as titanium alloys, polymer materials or composite materials. The hand-held part is mainly used for the operator to operate, and the tripping structure is used to detach the detachable piece from the hand-held part. The pulling mechanism provides the motive force for the detachment of the shedding piece. Furthermore, the shedding piece includes two collets and collet tubes that cooperate with each other, each collet includes a clamping part and a bending section, and the collet tube and the bending section cooperate with each other to realize the clamping action of the clamping part. . The movement of the bending section in the collet tube is matched, so that the collet can realize the clamping action, and the structure is simple.

Description of drawings

Fig. 1 is the first schematic diagram of the hemostatic clip provided by the present invention;

Fig. 2 is the second schematic diagram of the hemostatic clip provided by the present invention;

Fig. 3 is the exploded view of the hemostatic clip provided by the present invention close to the chuck;

4 is a schematic diagram of the cooperation between the collet and the pull rod of the hemostatic clip provided by the present invention;

Fig. 5 is the schematic diagram of the hemostatic clip provided by the present invention close to the chuck;

Fig. 6 is the schematic diagram after removing the collet tube of Fig. 5;

Fig. 7 is the schematic diagram of the slider of the hemostatic clip of the present invention;

Fig. 8 is the schematic diagram of the clip of the hemostatic clip of the present invention

9 is a partial cross-sectional view of the hemostatic clip provided by the present invention;

Fig. 10 is a partial enlarged view of Fig. 9;

11 is a cross-sectional view of the hemostatic clip provided by the present invention;

Fig. 12 is the first schematic diagram of the collet of the hemostatic clip provided by the present invention;

Fig. 13 is the second schematic diagram of the collet of the hemostatic clip provided by the present invention;

Fig. 14 is the third schematic diagram of the collet of the hemostatic clip provided by the present invention;

15 is a schematic diagram of the tripping sleeve of the hemostatic clip provided by the present invention;

Fig. 16 is the schematic diagram of the collet tube of the hemostatic clip provided by the present invention;

Figure 17 is a schematic diagram of the saw teeth of the collet provided by the present invention.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 , an embodiment of the present invention provides a hemostatic clip, which includes a shedding piece, a handle, a pulling mechanism and a tripping structure. The shedding piece includes a collet 1 and a collet tube 41. The collet 1 includes a clamping part 11 and a bending section 10. The collet tube 41 and the bending section 10 cooperate with each other to realize the clamping action of the clamping part 11; the pulling mechanism It is connected with one end of the bending section 10 for moving the collet 1 to realize the cooperation between the collet 1 and the collet tube 41; the release structure is provided between the drop-off part and the hand-held part for the drop-off part.

The hemostatic clip provided in this embodiment is composed of four parts, which are a shedding part, a hand-held part, a pulling mechanism and a tripping structure. The shedding parts remain in the body after falling off, and the shedding parts are made of biological anti-corrosion materials, such as titanium alloys, polymer materials or composite materials. The hand-held part is mainly used for the operator to operate, and the tripping structure is used to detach the detachable piece from the hand-held part. The pulling mechanism provides the motive force for the detachment of the shedding piece. Further, the shedding piece includes two collets 1 and collet tubes 41 that cooperate with each other, each collet 1 includes a clamping portion 11 and a bending section 10, and the collet tube 41 and the bending section 10 cooperate with each other to achieve The gripping action of the gripping portion 11 . The movement of the bending section 10 in the collet tube 41 cooperates, so that the collet 1 realizes the clamping action, and the structure is simple.

Further, please refer to FIG. 3 to FIG. 17 , the bending section 10 of this embodiment is U-shaped and is movably disposed in the collet tube 41 , and the connecting portion between the clamping portion 11 and the bending section 10 has In the arc-shaped transition section 12, the part of the clamping part 11 close to the sawtooth is bent inward, and between the arc-shaped transition section and the bending part, there is a fitting wing 111 that protrudes inwardly. When engaging the sawtooth, the The wings 111 can be attached to each other, thereby increasing the clamping area and increasing the hemostatic effect. The arc-shaped transition section is advantageous for the excessive connection between the bending section 10 and the clamping portion 11 , and the clamping portion 11 can better rotate around the bending section 10 to engage with each other. The portion of the clamping portion 11 close to the sawtooth is bent inward for the convenience of clamping.

The end of the collet 1 has cooperating serrations, and the serration angle of the serrations is 120 degrees, but in other embodiments, the serration angle can also be 90 degrees, 100 degrees, 110 degrees, or 130 degrees and any other angle greater than or equal to 90 degrees. horn. The two bending sections 10 and the clamping part 11 without the serrations are symmetrically arranged, and the serrations are mutually matched. Each chuck 1 in this embodiment has two serrations, a higher serration 1101 and a lower serration 1102. The two serrations are connected to each other, and the connected parts form a reverse serration. The sawtooth angle can also be any angle greater than or equal to 90 degrees, such as 90 degrees, 100 degrees, 110 degrees, 120 degrees or 130 degrees. This setting can ensure that in the process of the chuck 1 meshing with each other, no sawtooth distribution occurs. Displacement in the direction and increase the clamping area to ensure the clamping effect. In other embodiments, the teeth of each chuck 1 may also have three or more than or equal to three, and the higher teeth and the lower teeth are staggered.

In this embodiment, the tripping structure includes a tripping sleeve 3, the tripping sleeve 3 has a through hole penetrating the inside thereof, the pulling mechanism passes through the through hole, and the pulling mechanism slides in the through hole and can withstand one end of the through hole to make the tripping sleeve 3. The buckle sleeve 3 is subjected to the force in the pulling direction, and the release sleeve 3 is oppositely provided with a first buckle 311 and a second buckle; Two snap-fit second snap-fit structures; the first snap-fit 311 and the second snap-fit of the release sleeve 3 clamp the first snap-fit structure 310 and the second snap-fit structure, respectively, so that the fall-off piece and the hand-held By sliding the pulling mechanism, the pulling mechanism moves against the tripping sleeve 3, and the first buckle 311 is disengaged from the first engaging structure 310, thereby disconnecting the connection between the shedding part and the hand-held part, and realizing the tripping of the hemostatic clip. More specifically, in this embodiment, the shedding part includes a first sleeve 42 , the hand-held part includes a second sleeve 43 , and the first sleeve 42 has a first engaging structure 310 that cooperates with the first buckle 311 . The tube sleeve 43 has a second engaging structure matched with the second snap; the first snap 311 and the second snap of the release sleeve 3 clamp the first snap structure 310 and the second snap structure respectively, Thus, the first sleeve 42 and the second sleeve 43 are connected.

In this embodiment, one end of the pulling mechanism is provided with a pull rod head 64, the through hole of the release sleeve 3 includes a first channel and a second channel arranged in sequence along the pulling direction, the pull rod head 64 can slide in the first channel, and The outer diameter of the tie rod head 64 is larger than the inner diameter of the second passage. In this way, the tie rod head 64 can only move to the position of the first channel, and is blocked by the second channel, thereby playing a limiting role.

In the present embodiment, the end of the bending section 10 has a connecting hole matched with the tie rod head 64 , and the connecting hole is formed by the intersection of two crisscross holes 101 . The intersecting part of the two crossed holes is a circular hole, and the position far from the intersection is a hole smaller than the diameter of the circular hole, which is beneficial to ensure the effect of connection and fixation.

In this embodiment, the pulling mechanism further includes a pin shaft 14 , the collet tube 41 has a pin shaft hole 140 that cooperates with the pin shaft 14 , and the pin shaft 14 passes through the bending section 10 and passes through the pin shaft hole 140 . It is used to fix the collet 1 and the collet tube 41 inside. The other end of the collet tube 41 is further provided with a square hole 410 , and one end of the square hole 410 is provided with a warped piece 411 along the direction of the diameter of the collet tube 41 . The warping piece 411 can be rotated along one end of the square hole.

In this embodiment, the release sleeve 3 includes a release piece 31 and a release body 30 , and the gap distance between the release pieces 31 is greater than the width of the release piece 31 . One end of the stripping sheet 31 is provided with a first buckle 311, and one end of the stripping body 30 is provided with a second buckle, the first buckle 311 is an outward protrusion, and the protrusion is an acute-angled protrusion. In the example, there are three stripping pieces 31 , which are uniformly arranged on the stripping body 30 respectively. The acute-angled protrusion is conducive to deformation, so as to be separated from the first engaging structure 310 such as the opening.

In this embodiment, the pulling mechanism includes a clamping block 63, a sleeve 62, a pull rod 63 and a sliding block 61. The pulling rod 63 is connected to one end of the bending section 10, the sliding block 61 and the clamping block 63 are fixedly connected, and the clamping block 63 is used for The pull rod 63 is fixedly connected, the sleeve 62 has a chute 620 , and the clamping block 63 is slidably connected in the chute 620 . The slider 61 has two rings 610 for letting go and has a through hole for accommodating the clamping block 63. Two grooves 6110 of different shapes are respectively set at both ends of the groove 611 on the inner wall of the through hole, and the corresponding position of the clamping block 63 is also There are clamping blocks 631 fitted with the two grooves respectively for fixing the sliding block 61 and the clamping block 63 .

The hemostatic clip in this embodiment further includes a shell, the shell includes a connecting sleeve 51 and a wristband 52, the connecting sleeve 51 is fixedly connected to the outer tube 45 for protecting the internal structure, and the lower part of the outer tube 45 is connected with an elastic tube 2, preferably, the elastic tube 2 It is one of spring hoses and silicone hoses. Its function is to achieve buffering when clamping the mucosa of the digestive tract, protect the structure of the human digestive tract, and also play a buffering and protection role for the hemostatic clip. The wristband is used for the operator to hold, and the slider 61 slides on the sleeve 62 . The elastic tube 2 is arranged outside the pull rod 63 .

The hemostatic clip provided in this embodiment further includes a rotating mechanism 7, which is connected with the collet 1, and the collet 1 can be rotated relative to the sleeve 62 by rotating the rotating mechanism 7, which is convenient for users to Appropriate angle to drop collet 1. The rotating mechanism 7 is a rotating nut, and the rotating nut and the collet tube 41 are fixed and the sleeve 62 can rotate relative to each other, so as to realize the rotation of the collet 1 relative to the sleeve 62 .

4 and 5 , the principle of the tripping sleeve 3 engaging the first tube sleeve 42 and the second tube sleeve 43 and the tripping principle will be described in detail. The collet tube 41 and the first sleeve 42 are fixedly connected, the inner wall of the first sleeve 42 has a first engaging structure 310, the inner wall of the second sleeve 43 has a second engaging structure, and the outer wall of the tripping sleeve 3 has a The first buckle 311 and the second buckle corresponding to the first buckle structure 310 and the second buckle structure, due to the limiting effect of the first buckle 311 and the second buckle, the first buckle structure 310 and the second buckle The engaging structure is restricted between the first snap 311 and the second snap, so that the first tube sleeve 42 and the second tube sleeve 43 are connected. At the same time, the trip sleeve 3 has a through hole inside, and the through hole includes two first channels and second channels with different inner diameters, and the inner diameter of the first channel is larger than the inner diameter of the second channel, and the outer diameter of the sleeve is larger than that of the second channel. The inner diameter of the channel, at this time, when the release sleeve is pulled to the right, its right end face withstands the stepped surface formed by the first channel and the second channel, so that the release sleeve 3 is pushed to the right. When the thrust is large enough, the first buckle 311 and the first engaging structure 310 are squeezed and deformed, so that the first buckle 311 is released from the first engaging structure 310, that is, the first sleeve 42 and the second sleeve 43. The connection force between them disappears, so that the tripping is realized.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and accompanying drawings of the present invention can be directly or indirectly used in other related technical fields. All are similarly included in the protection scope of the present invention.

Claims (10)

1. a hemostatic clip, is characterized in that, comprises: The shedding piece includes a collet and a collet tube, the collet includes a clamping part and a bending section, and the collet tube and the bending section cooperate with each other to realize the clamping action of the clamping part; handheld, a pulling mechanism, connected with one end of the bending section for moving the collet to realize the cooperation of the collet and the collet tube; The tripping structure is arranged between the shedding piece and the hand-held portion for shedding the shedding piece. 2 . The hemostatic clip according to claim 1 , wherein the bending section is U-shaped and is movably arranged in the collet tube, and the clamping section and the bending section are separated. 3 . The connecting part between the two has an arc-shaped transition section, the part of the clamping part close to the sawtooth is bent inward, and an inwardly protruding fitting wing is arranged between the arc-shaped transition section and the bending part. 3 . The hemostatic clip according to claim 2 , wherein the end of the clip has cooperating serrations, and the serration angle of the serrations is greater than or equal to 90 degrees. 4 . 4. The hemostatic clip according to any one of claims 1 to 3, wherein the tripping structure comprises a tripping sleeve, the tripping sleeve has a through hole passing through the inside thereof, and the pulling mechanism Passing through the through hole, the pulling mechanism slides in the through hole and can withstand one end of the through hole so that the release sleeve is subjected to the force in the pulling direction, and the release sleeve is relatively provided with a first buckle and a second buckle; The shedding piece has a first snap-fit structure matched with the first snap-fit; the handle portion has a second snap-fit structure matched with the second snap-fit; the first snap-fit and the second snap-fit of the release sleeve The first snap-fit structure and the second snap-fit structure are respectively clamped, so that the drop-off piece is connected with the hand-held part. By sliding and pulling the mechanism, the pulling mechanism is moved against the tripping sleeve, and the first snap is released from the first snap-off. The closing structure is adopted, thereby disconnecting the connection between the shedding part and the hand-held part, and realizing the tripping of the hemostatic clip. 5 . The hemostatic clip according to claim 4 , wherein a pull rod head is provided at one end of the pulling mechanism, and the through hole of the release sleeve comprises a first channel and a second channel arranged in sequence along the pulling direction. 6 . A channel, the tie rod head can slide in the first channel, and the outer diameter of the tie rod head is larger than the inner diameter of the second channel. 6 . The hemostatic clip according to claim 5 , wherein the end of the bending section has a connecting hole matched with the tie rod head, and the connecting hole is intersected by two crisscross holes. 7 . form. 7 . The hemostatic clip according to claim 6 , wherein the pulling mechanism further comprises a pin shaft, the collet tube has a pin shaft hole cooperating with the pin shaft, and the pin shaft passes through the pin shaft. 8 . It is arranged in the bending section and penetrated in the pin shaft hole for fixing the collet and the collet tube. 8 . The hemostatic clip according to claim 4 , wherein the release sleeve comprises a release piece and a release body, and the gap distance between the release pieces is greater than the width of the release piece. 9 . 9 . The hemostatic clip according to claim 8 , wherein the shedding member comprises a first tube sleeve, the hand-held portion comprises a second tube sleeve, and the first tube sleeve is provided with a first clip The matching first snap-fit structure, the second tube sleeve has a second snap-fit structure matched with the second snap-fit; the first snap-fit and the second snap fit The engaging structure and the second engaging structure connect the first tube sleeve and the second tube sleeve. 10. The hemostatic clip according to any one of claims 1 to 3, wherein the pulling mechanism comprises a clamping block, a sleeve, a pull rod and a slider, the pull rod and one end of the bending section The sliding block and the clamping block are fixedly connected, the clamping block is used to fixedly connect the pull rod, the sleeve has a chute, and the clamping block is slidably connected in the chute, and the clamping block is slidably connected by sliding The sliding block can realize the sliding connection of the clamping block in the chute so as to realize the movement of the pull rod.

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