CN219231203U

CN219231203U - Clamp and blood pump

Info

Publication number: CN219231203U
Application number: CN202221783291.2U
Authority: CN
Inventors: 谢端卿; 余顺周
Original assignee: Shenzhen Core Medical Technology Co Ltd
Current assignee: Shenzhen Core Medical Technology Co Ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-06-23
Anticipated expiration: 2032-07-12

Abstract

The application relates to a clamp and a blood pump. The clamp comprises an opening ring and a lock catch assembly; the split ring comprises a first end and a second end which are circumferentially spaced, the first end is provided with a first stop piece extending towards the second end, and the second end is provided with a second stop piece extending towards the first end; the latch assembly is arranged on the split ring and can enable the first end and the second end to be close to each other and keep locking, so that the first stop piece and the second stop piece jointly cover a gap between the first end and the second end. The clamp and the blood pump are used for solving the technical problems that folds and sealing are not tight easily caused by the fact that the artificial blood vessel is fixed by the clamp in the related technology.

Description

Clamp and blood pump

Technical Field

The application relates to the technical field of medical equipment, in particular to a clamp and a blood pump.

Background

An artificial blood pump, i.e. an artificial heart blood pump, is used to replace the heart in a device that assists patients suffering from severe ventricular function or heart failure to provide a certain blood flow and blood pressure. The pump body of the artificial blood pump is connected to the main blood vessel of the human body through an artificial blood vessel, wherein a locking device is required to be sleeved at the connection position of the outlet pipe of the pump body and the artificial blood vessel, so that the tightness of the connection position of the blood pump and the artificial blood vessel is ensured.

In the related art, the artificial blood vessel and the pump body can be fixed by using the clamp. However, when utilizing current clamp fixed artificial blood vessel, be limited to the clamp structure, the fold appears in the seam crossing of artificial blood vessel at the clamp easily, leads to the unable close laminating of artificial blood vessel and the outlet pipe of the pump body to leak blood problem easily.

Disclosure of Invention

An object of the application is to provide a clamp and blood pump for when utilizing the clamp to fix the vascular prosthesis in the correlation technique, the vascular prosthesis appears fold easily, sealed not tight technical problem.

To solve the above problems, in a first aspect, the present application provides a clip, including:

a split ring comprising circumferentially spaced first and second ends, the first end having a first stop extending toward the second end, the second end having a second stop extending toward the first end; and

the locking assembly is arranged on the split ring and can enable the first end and the second end to be close to each other and then keep locking, so that the first stop piece and the second stop piece jointly cover a gap between the first end and the second end.

In an embodiment, the first stop member is a first protruding plate, the second stop member is a second protruding plate, and the first protruding plate and the second protruding plate are staggered along the axial direction of the split ring.

In an embodiment, the first end is further provided with a avoidance groove, the avoidance groove corresponds to the position of the second stop member, and when the opening ring is locked, the second stop member partially extends into the avoidance groove.

In an embodiment, the end of the first stop opposite to the second stop and the end of the second stop opposite to the first stop are both arc structures.

In an embodiment, when the opening ring is locked, no contact is made between the first stop and the second end, between the second stop and the first end, and between the first stop and the second stop.

In an embodiment, the thickness of the first stopper and the second stopper in the radial direction of the split ring is greater than the thickness of the body of the split ring.

In an embodiment, the clamp further comprises a connecting ring, the connecting ring and the split ring are coaxially arranged and are partially connected to one axial side of the split ring, so that a through groove is formed between the split ring and the connecting ring, and a positioning protrusion is arranged on the outer wall of the connecting ring.

In an embodiment, the first stop is disposed at an edge distal from the first end of the connecting ring in the axial direction.

In an embodiment, the latch assembly includes a latch and a latch protrusion, the latch is disposed on an outer wall of the first end, the latch protrusion is disposed on an outer wall of the second end, and the latch may cooperate with the latch protrusion to reduce an inner diameter of the split ring and prevent the inner diameter of the split ring from becoming larger.

In a second aspect, the present application provides a blood pump comprising:

a pump body having an outlet tube;

the artificial blood vessel is sleeved on the outlet pipe;

a clip according to the first aspect, wherein the split ring of the clip is disposed over an artificial blood vessel, and the locking assembly is capable of holding the first end and the second end in close proximity to each other and locked such that the split ring compresses the artificial blood vessel disposed over the outlet tube against the outlet tube.

The clamp that this application provided includes the split ring and sets up the hasp subassembly on the split ring to the split ring is including circumference distribution's first end and second end, utilizes hasp subassembly steerable first end and second end to be close to each other and realizes that the split ring is closed, and the split ring can overlap to locate on the outlet pipe of artificial blood vessel and the pump body, and the closure keeps the locking, in order to fix artificial blood vessel and sealing connection in the pump body. The first end is equipped with the first backstop spare that extends towards the second end, and the second end is equipped with the second backstop spare that extends towards the first end, and the split ring is pressed deformably and is closed by external force, and when the split ring locking was on the artificial blood vessel, its first end and second end were drawn close each other to first backstop spare and second backstop spare can cover the clearance between first end and the second end jointly, thereby the split ring can Zhou Xiangdu compress tightly the artificial blood vessel, and artificial blood vessel junction department sealed effect is better. Meanwhile, as the first stop piece and the second stop piece can jointly cover the gap between the first end and the second end, after the clamp sleeve is arranged on the artificial blood vessel, the artificial blood vessel Zhou Xiangdu is tightly pressed and cannot protrude out of the gap, so that the outer tube wall of the artificial blood vessel can be kept flat, wrinkles are not easy to occur, the problem of blood leakage caused by the wrinkles can be avoided, and blood in the tube can normally circulate. In addition, the clamp is simple in structure, convenient to use, capable of achieving rapid installation and beneficial to improving operation speed and efficiency of surgery.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a clip according to an embodiment of the present application mounted on an artificial blood vessel;

FIG. 2 is a schematic structural view of a clip according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of the split ring and the attachment ring of the clamp of FIG. 2;

FIG. 4 is a second schematic structural view of a clip according to an embodiment of the present disclosure;

FIG. 5 is a third schematic structural view of a clip according to an embodiment of the present disclosure;

FIG. 6 is an exploded view of a clip provided in an embodiment of the present application;

FIG. 7 is a schematic view of a clip according to an embodiment of the present disclosure;

FIG. 8 is a fifth schematic structural view of a clip according to an embodiment of the present application;

FIG. 9 is a sixth schematic structural view of a clip according to an embodiment of the present application;

FIG. 10 is an axial cross-sectional view of a clip provided in an embodiment of the present application;

FIG. 11 is a side view of the clip of FIG. 5;

fig. 12 is a schematic diagram of a clip according to an embodiment of the present disclosure.

Description of main reference numerals:

100. a clamp;

200. an artificial blood vessel;

300. an adapter;

10. a split ring; 11. a first end; 12. a second end; 13. a first stopper; 14. a second stopper; 15. an avoidance groove; 16. a mounting plate; 17. a clamping groove;

20. a latch assembly; 21. a buckle; 211. a clamping hole; 212. an avoidance unit; 213. an avoidance port; 214. a third connecting portion; 22. a clamping protrusion; 221. a first section; 222. a second section; 23. pressing the plate; 231. a first connection portion; 232. a second connecting portion; 233. a pressing part; 234. a groove;

30. a connecting ring; 31. positioning the bulge; 32. and (5) through grooves.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper," "lower," "left," "right," and the like are used for convenience of description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements in question must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting of the patent. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.

The artificial blood pump is a ventricular assist device and comprises a pump body, an adapter, an artificial blood vessel and a protection tube. The pump body comprises an inner cavity and an outlet pipe communicated with the inner cavity, the adapter is sleeved on the outlet pipe of the pump body, one end of the artificial blood vessel is sleeved on the adapter and communicated with the outlet pipe, and the protection pipe is sleeved on the artificial blood vessel. The artificial blood vessel is a soft circular pipeline for providing a channel for blood circulation, and after the artificial blood vessel is connected to an outlet pipe of the pump body, blood in the inner cavity of the pump body can flow out through the artificial blood vessel. The whole cover of protection tube is located the artificial blood vessel outside for provide the protection for artificial blood vessel, in order to avoid artificial blood vessel to take place to warp by a wide margin because of receiving organ extrusion.

As shown in fig. 1 to 12, the present application provides a clip 100 for use in an artificial blood pump for assisting in securing an artificial blood vessel 200 to a pump body.

As shown in fig. 2, the clip 100 provided herein includes a split ring 10 and a latch assembly 20 for locking the split ring 10.

As shown in fig. 2, 3 and 4, the split ring 10 has elasticity and an adjustable inner diameter, the split ring 10 has a radial opening, and a first end 11 and a second end 12 are formed in circumferential distribution, and a gap exists between the first end 11 and the second end 12. The first end 11 is provided with a first stop 13 extending towards the second end 12, the second end 12 is provided with a second stop 14 extending towards the first end 11, and the first stop 13 and the second stop 14 are distributed along the axial direction of the split ring 10 (direction X in fig. 3).

As shown in fig. 5 and 6, the latch assembly 20 is disposed on the split ring 10 and is used to lock the split ring 10, the first end 11 and the second end 12 of the split ring 10 are close to each other and remain locked, and the first stopper 13 and the second stopper 14 may jointly cover the gap between the first end 11 and the second end 12 to close the opening between the first end 11 and the second end 12.

It will be appreciated that in the initial state, the split ring 10 is opened after the latch assembly 20 is unlocked, and the first end 11 and the second end 12 of the split ring 10, and the first stopper 13 and the second stopper 14 are separated. The split ring 10 is pressed by an external force to bring the first end 11 and the second end 12 of the split ring 10 close to each other, and the latch assembly 20 is adjusted to be locked, at which time the first stopper 13 and the second stopper 14 are positioned opposite to each other, i.e., the distance between the first stopper 13 and the second stopper 14 becomes smaller, so that the split ring 10 can be closed and locked. When the split ring 10 is closed, the inner diameter thereof is reduced, and the split ring can be fixedly sleeved at a preset position of the artificial blood vessel 200, so that the artificial blood vessel 200 is clamped on an outlet pipe of the pump body.

The clamp 100 provided by the application comprises a split ring 10 and a lock catch assembly 20 arranged on the split ring 10, wherein the split ring 10 comprises a first end 11 and a second end 12 which are circumferentially distributed, the first end 11 and the second end 12 can be controlled to be close to each other by the lock catch assembly 20 to realize the closure of the split ring 10, the split ring 10 can be sleeved on an outlet pipe of an artificial blood vessel 200 and a pump body and is closed and kept locked so as to fix the artificial blood vessel 200 and be connected with the pump body in a sealing way. The first end 11 is provided with a first stop piece 13 extending towards the second end 12, the second end 12 is provided with a second stop piece 14 extending towards the first end 11, the split ring 10 is pressed by external force to be deformed and closed, when the split ring 10 is locked on the artificial blood vessel 200, the first end 11 and the second end 12 are mutually close, and the first stop piece 13 and the second stop piece 14 can jointly cover a gap between the first end 11 and the second end 12, so that the split ring 10 can circumferentially compress the artificial blood vessel 200 by 360 degrees, and the sealing effect at the connecting position of the artificial blood vessel 200 is good. Meanwhile, as the first stop piece 13 and the second stop piece 14 can jointly cover the gap between the first end 11 and the second end 12, after the clamp 100 is sleeved on the artificial blood vessel 200, 360 degrees of the circumference of the artificial blood vessel 200 are compressed, and the artificial blood vessel 200 cannot protrude out of the gap, so that the outer tube wall of the artificial blood vessel 200 can be kept flat, wrinkles are not easy to occur, the blood leakage problem caused by the wrinkles can be avoided, and the blood in the tube can circulate normally. In addition, the clamp 100 is simple in structure, convenient to use, capable of being installed rapidly, and beneficial to improving operation speed and efficiency.

As shown in fig. 2, 7 and 9, the clip 100 provided in the present application is characterized in that the first stop member 13 is a first protruding plate, and the second stop member 14 is a second protruding plate, and the first protruding plate and the second protruding plate are staggered along the axial direction of the split ring 10.

When the first end 11 and the second end 12 are close to each other, the first convex plate and the second convex plate are close to each other and mutually staggered to jointly cover the gap between the first end 11 and the second end 12, so that the tightness can be improved, no axial penetrating gap exists between the first end 11 and the second end 12, and the risk that the artificial blood vessel 200 is extruded to the gap is further eliminated; and the first convex plate and the second convex plate are staggered to provide an axial limiting effect between the first end 11 and the second end 12, so that the axial deviation can be avoided, and the locking effect is better.

In an embodiment, as shown in fig. 2, 3 and 7, one first stopper 13 and one second stopper 14 are provided, the first stopper 13 is disposed at any position of the first end 11 in the axial direction, and the second stopper 14 may be disposed at any position of the second end 12, so long as it is spaced from the first stopper 13. By adopting the design, the first stop piece 13 and the second stop piece 14 have simple structure, reasonable position design and good covering effect.

Furthermore, in one embodiment, there are two first stoppers 13, one second stopper 14, the second stopper 14 is disposed at the middle of the second end 12 in the axial direction, and two first stoppers 13 are disposed on the first end 11 and on both sides of the second stopper 14. By adopting the design, the three convex plates are covered in a staggered way, the coverage area is large, and the coverage effect can be further improved.

It should be understood that the structures and numbers of the first stoppers 13 and the second stoppers 14 are not unique, for example, in some embodiments, the first stoppers 13 and the second stoppers 14 may further include a plurality of limiting posts, and the plurality of limiting posts may be mutually intersected when the first ends 11 are aligned with the second ends 12, which may be specifically designed according to practical situations and is not limited herein.

The clamp 100 that this application provided still is equipped with on the first end 11 with second stopper 14 relative position department and dodges the groove 15, and when split ring 10 locking, second stopper 14 part stretches into dodges in the groove 15. Specifically, as shown in fig. 2, 3 and 7, a first stop member 13 is disposed on the first end 11, the first stop member 13 is disposed at an edge of the first end 11, an avoidance groove 15 is disposed at a position adjacent to the first stop member 13 at an end of the first end 11, a second stop member 14 is disposed on the second end 12, the second stop member 14 is disposed in a middle portion of the second end 12, the second stop member 14 is opposite to the avoidance groove 15, and in the first direction, a size of the avoidance groove 15 is slightly larger than a size of the second stop member 14, and when the split ring 10 is closed, a front end of the second stop member 14 extends into the avoidance groove 15. By adopting the design, the avoidance groove 15 and the second stop piece 14 have a limiting effect in the first direction, so that the alignment precision of the first end 11 and the second end 12 of the split ring 10 can be improved, the split ring 10 can be quickly installed, meanwhile, the distance between the first stop piece 13 and the second stop piece 14, which is close to each other, is larger, the coverage gap is wider, and the coverage tightness of the artificial blood vessel 200 is better.

The clamp 100 provided by the application, the end part of the first stopper 13 opposite to the second stopper 14 and the end part of the second stopper 14 opposite to the first stopper 13 are all arc structures. With the adoption of the design, in the process of closing and locking the split ring 10, the first stop piece 13 and the second stop piece 14 are not easy to puncture the artificial blood vessel 200, and the first stop piece and the second stop piece cannot collide with each other or scratch, so that the use safety of the clamp 100 can be improved.

Further, the corners of the first stop piece 13 and the second stop piece 14 are chamfered, so that safety is further improved.

As shown in fig. 7, when the split ring 10 is closed, gaps exist between the first stopper 13 and the second end 12, between the second stopper 14 and the first end 11, and between the first stopper 13 and the second stopper 14, that is, the first stopper 13 is not in contact with the end of the second end 12 and the second stopper 14, and the second stopper 14 is not in contact with the end of the first end 11 and the first stopper 13. By adopting the design, in the closing process of the split ring 10, interference or collision between the first end 11 and the second end 12, and between the first stop piece 13 and the second stop piece 14 is not easy to occur, so that the closing effect and the clamping effect are prevented from being influenced.

The thickness of the first stopper 13 and the second stopper 14 in the radial direction of the split ring 10 is greater than the thickness of the main body of the split ring 10 in the clip 100 provided by the present application. Wherein the thickness is the dimension in the radial direction of the split ring 10. By adopting the design, on one hand, the thickness of the first stop piece 13 and the second stop piece 14 is larger, the strength of the part is high, bending deformation and the like are not easy to happen due to false triggering, and the reliability is high; on the other hand, the split ring 10 has smaller main body thickness, good elasticity, strong deformability and convenient use.

As shown in fig. 1, 7 and 12, the split ring 10 is provided with a clamping groove 17, and the clamping groove 17 penetrates the split ring 10 and extends along the circumferential direction of the split ring 10. The artificial blood pump comprises an adapter 300, the adapter 300 is sleeved on an outlet pipe of a pump body, the artificial blood vessel 200 is sleeved on the adapter 300, after the opening ring 10 is sleeved on the artificial blood vessel 200, the clamping groove 17 is clamped with a matching part on the adapter 300, so that the artificial blood vessel 200 is partially deformed and pressed in the clamping groove 17, and the clamping groove 17 can be used for limiting the axial positions of the artificial blood vessel 200 and the adapter 300 so as to improve the connection fixing effect and the sealing performance of the artificial blood vessel 200 and the pump body. In other embodiments, the adapter 300 is part of an outlet tube.

As shown in fig. 5, 6 and 7, the latch assembly 20 includes a latch 21 disposed on an outer wall of the first end 11 and a latch protrusion 22 disposed on an outer wall of the second end 12, and the latch 21 can be latched to the latch protrusion 22 to lock the split ring 10. By adopting the design, the unlocking and locking of the split ring 10 can be realized through the matching mode of the buckle 21 and the clamping convex 22, and the lock catch assembly 20 has simple structure and convenient use.

Further, the clamping protrusion 22 is disposed at a middle portion of the second end 12 along the first direction, and the clamping protrusion 22 corresponds to the second stop member 14 and is disposed adjacent to the second stop member in the circumferential direction.

Further, the first end 11 is provided with a mounting plate 16 for the catch 21, the mounting plate 16 being arranged in correspondence with and circumferentially adjacent to the first stop 13. It will be appreciated that there may be two mounting plates 16, and disposed near opposite sides of the first end 11, where two mounting plates 16 are in one-to-one correspondence with two first stoppers 13 if the first stoppers 13 are two, and where one mounting plate 16 is in correspondence with the first stopper 13 if the first stoppers 13 are one.

As shown in fig. 2, 4 and 6, the latch assembly 20 further includes a pressing plate 23. One end of the pressing plate 23 is rotatably connected to the first end 11 of the split ring 10 through a rotating shaft, one end of the buckle 21, which is far away from the clamping protrusion 22, is rotatably connected to the middle of the pressing plate 23 through the rotating shaft, and the clamping protrusion 22 is fixedly arranged at the second end 12 of the split ring 10. The pressing plate 23 can be forced to rotate the free end of the pressing plate 23 towards the direction away from or close to the second end 12 of the split ring 10, so as to drive the buckle 21 to be buckled and locked on the clamping protrusion 22, or drive the buckle 21 to be separated from the clamping protrusion 22. With the above design, the latch assembly 20 is flexible in structure and convenient to use.

After the clamping hole 211 of the clamping buckle 21 is clamped on the clamping convex 22, the clamping convex 22 can be used as a fulcrum to rotate relative to the split ring 10 and the clamping convex 22. Specifically, the buckle 21 is connected to the pressing plate 23, and is hinged to the pressing plate 23, when the pressing plate 23 is shifted to rotate in a direction away from the second end 12, the pressing plate 23 provides a force tending to the center of the split ring 10 for the buckle 21, so that the buckle 21 can be driven to rotate towards the surface of the split ring 10, and the buckle 21 is locked to the buckle protrusion 22; when the pressing plate 23 is shifted to rotate towards the direction approaching to the second end 12, the pressing plate 23 provides a force for the buckle 21 to deviate from the circle center of the split ring 10, so that the buckle 21 can be driven to deviate from the surface of the split ring 10 to rotate, and the buckle 21 and the clamping protrusion 22 are unlocked. It will be appreciated that in the initial state, the latch 21 is separated from the latch protrusion 22, and the latch hole 211 of the latch 21 needs to be latched to the latch protrusion 22 by rotating the pressing plate 23.

As shown in fig. 2, 4 and 6, the pressing plate 23 includes a first connecting portion 231 and a second connecting portion 232, the first connecting portion 231 is used for connecting the mounting plate 16, the second connecting portion 232 is used for connecting the buckle 21, wherein the second connecting portion 232 is used as another pivot point for rotating the buckle 21 and is disposed in the middle of the pressing plate 23, that is, the buckle 21 is connected to the middle of the pressing plate 23. The buckle 21 includes a third connecting portion 214, and the third connecting portion 214 is used for connecting with a second connecting portion 232 of the pressing plate 23. It can be understood that the distance between the free end of the pressing plate 23 and the second connecting portion 232 is equal to the distance between the second connecting portion 232 and the first connecting portion 231, that is, the distance between the free end of the pressing plate 23 and the first connecting portion 231 is twice as long as the distance between the second connecting portion 232 and the first connecting portion 231, so that the power arm of the pressing plate 23 is twice as large as the resistance arm thereof, the movement of the pressing plate 23 is more labor-saving, the position adjustment of the pressing plate 23 and the buckle 21 is convenient, and the stress point of the pressing plate 23 is in the middle portion thereof, the two sections of stress are even, and the hand feeling is good.

As shown in fig. 2, 4 and 6, the pressing plate 23 is a curved plate. When the buckle 21 is locked on the locking convex 22, the pressing plate 23 is attached to the outer contour of the main body of the split ring 10, and the structure is compact. In addition, on the pressing plate 23, the first connection part 231, the second connection part 232 and the stress point at the free end of the pressing plate 23 are not on the same straight line, and when the pressing plate 23 is shifted, the pressure part received by the pressing plate 23 points to the center of the split ring 10, so that the pressing plate 23 is conveniently driven to rotate.

As shown in fig. 2, 4 and 6, the free end (i.e., the end far from the first end 11) of the pressing plate 23 has a pressing portion 233, and the pressing portion 233 is turned outwards toward the side far from the split ring 10, so that a gap is formed between the pressing portion 233 and the split ring 10 when the pressing plate 23 is attached to the split ring 10. With the above design, when the split ring 10 is in a closed state and the pressing plate 23 is attached to the split ring 10 main body, a space for the fingers of an operator to scratch is reserved between the pressing part 233 of the pressing plate 23 and the split ring 10 main body, so that the split ring is convenient to use.

Further, as shown in fig. 2, 4 and 6, a groove 234 is provided on one side of the pressing portion 233, which is attached to the split ring 10, so as to further increase the reserved space, and facilitate the finger to enter to toggle the pressing portion 233.

Further, the free end of the pressing plate 23 is larger in size to increase the pressing area of the pressing plate 23.

It will be appreciated that, as shown in fig. 2, 4 and 6, a datum line is defined between the first connecting portion 231 of the pressing plate 23 and the clamping protrusion 22, and when the second connecting portion 232 rotates to the datum line extension line during the rotation and resetting process of the pressing plate 23, the pressing plate 23 continues to rotate towards the split ring 10, the second connecting portion 232 and the pressing portion 233 are located below the datum line, and the pressing plate 23 continuously receives downward force, so as to automatically spring to the main body of the split ring 10 and complete automatic fitting and resetting. Similarly, when the latch assembly 20 is unlocked, the pressing plate 23 is pushed to rotate the second connecting portion 232 and the pressing portion 233 of the pressing plate 23 above the reference line, and the pressing plate 23 can be automatically sprung, so that the latch 21 can be automatically opened.

The buckle 21 is provided with a rectangular clamping hole 211, and a concave part is formed at the edge of the clamping hole 211. The concave part is abutted with the clamping convex 22 to provide a stress supporting point, so that the friction force between the clamping hole 211 and the clamping convex 22 is favorably improved, and the falling risk of the clamping buckle 21 and the clamping convex 22 during clamping can be reduced.

Further, as shown in fig. 2, 9 and 10, one end of the pressing plate 23 is rotatably connected to the mounting plate 16, and the buckle 21 protrudes toward one side to form a relief 212 to adapt to the shape of the mounting plate 16 and the structure of the opening position of the split ring 10.

Further, as shown in fig. 2, 4 and 6, the buckle 21 is connected to one end of the pressing plate 23, and an avoidance opening 213 is provided, where the avoidance opening 213 is adapted to the shape of the pressing plate 23 and the second connection portion 232, and is used for reserving a moving space so as to avoid interference between the pressing plate 23 and the buckle 21 during the moving process.

As shown in fig. 5, 6 and 10, the latch 22 includes a first portion 221 and a second portion 222, one end of the first portion 221 is connected to the main body of the split ring 10 and extends along the radial direction of the split ring 10, the second portion 222 is connected to one end of the first portion 221 away from the main body of the split ring 10 and extends toward a direction away from the first end 11, and an angle between the extending direction of the second portion 222 and the extending direction of the first portion 221 is not greater than 90 °. The first portion 221 is inclined toward the first end 11, and the second portion 222 has an inclined surface toward one side of the first portion 221. When the buckle 21 is buckled on the buckle convex 22, the buckle hole 211 is firstly propped against the second part 222 of the buckle convex 22, and along with the rotation of the pressing plate 23 and the buckle 21, the buckle hole 211 slides to the root position of the first part 221 along the first part 221, the split ring 10 is tightened, and the buckle 21 is finally locked on the buckle convex 22. The first portion 221 is disposed obliquely, and the second portion 222 is disposed with a guide surface, which can serve as a guide.

The application provides a clamp 100, as shown in fig. 1, 9 and 11, the clamp 100 still includes go-between 30, go-between 30 and split ring 10 coaxial setting and connect in split ring 10 axial one side, the internal diameter of go-between 30 is greater than the internal diameter when split ring 10 is closed to be equipped with location arch 31 on the outer wall of go-between 30. The artificial blood pump comprises a protection tube, the whole protection tube is sleeved outside the artificial blood vessel 200 and has a gap with the artificial blood vessel 200 for protecting the artificial blood vessel 200, the connecting ring 30 is used for connecting the protection tube, the positioning bulge 31 on the connecting ring 30 is clamped with the corresponding matching part on the protection tube, the connecting ring 30 and the split ring 10 jointly act, the axial positions of the artificial blood vessel 200 and the protection tube can be limited, and the connection effect of the artificial blood vessel 200 and the protection tube can be improved.

Alternatively, as shown in fig. 7, 8 and 9, the first end 11 of the split ring 10 is provided with a first stopper 13, and the first stopper 13 is disposed at the edge of the first end 11, and the connection ring 30 is connected to the split ring 10 on a side far from the first stopper 13.

Specifically, the first stopper 13 is disposed at any edge of the first end 11 in the axial direction and is connected to one axial side of the split ring 10, and the second stopper 14 may be disposed at any position of the second end 12 as long as it is spaced apart from the first stopper 13. By adopting the design, the first stop piece 13 is arranged on the outlet pipe close to the pump body, and can cover the artificial blood vessel 200 sleeved on the outlet pipe at the nearest position, so that the position design is reasonable, and the covering effect is good.

Further, as shown in fig. 4, 7 and 9, the split ring 10 is partially connected to the connection ring 30, and a through groove 32 is formed between the first end 11 and the second end 12 of the split ring 10 and the connection ring 30, respectively. By adopting the above design, the first end 11 and the second end 12 of the split ring 10 are relatively free, the first end 11 and the second end 12 are pressed by external force, so that the split ring 10 can be deformed and folded, the first end 11 and the second end 12 are mutually close to be closed, the split ring 10 is fixed on the connecting ring 30, the position of the split ring 10 is relatively fixed in the locking or unlocking process, and an operator can complete the fixation of the clamp 100 by one hand, so that the use is convenient.

Further, as shown in fig. 9, the middle part of the split ring 10 is fixedly connected with the connection ring 30 in the circumferential direction of the split ring 10. By adopting the design, the connecting structure between the split ring 10 and the connecting ring 30 is stable, the deformation of the first end 11 and the second end 12 is basically consistent in the folding process of the split ring 10, the displacement of the first end 11 and the second end 12 is relatively equal, so that the split ring 10 is uniformly deformed, the split ring 10 is regular in shape, and the clamping and fixing effects are good.

Further, as shown in fig. 9, the positioning protrusions 31 on the connecting ring 30 include a plurality of groups of ribs uniformly distributed along the circumferential direction of the connecting ring 30, the ribs are located on one side of the connecting ring 30 away from the split ring 10, and the ribs can be mutually buckled with the clamping grooves 17 on the protection tube. By adopting the design, the positioning protrusion 31 is reasonable in structure, convenient to connect and good in limiting effect.

The clip 100 provided herein is specifically used as follows: firstly, sleeving an artificial blood vessel 200 on an adapter 300, sleeving a clamp 100 on the artificial blood vessel 200, and enabling an opening ring 10 of the clamp 100 to be aligned with the adapter 300 and a pump body outlet pipe; then, the split ring 10 is pressed by external force, so that the split ring 10 is closed and locked on the artificial blood vessel 200, and the artificial blood vessel 200 is tightly pressed between the split ring 10 of the clamp 100 and the outlet pipe of the pump body, so that the artificial blood vessel 200 is tightly connected with the pump body; then, the protection tube is connected to the connection ring 30 of the clip 100, and the pump body, the artificial blood vessel 200, the clip 100, and the protection tube are integrally connected.

In conclusion, the clamp 100 that this application provided can be used to connect the pump body and the artificial blood vessel 200 of fixed artificial blood pump, and clamp 100 is rational in infrastructure, fixed effect is better, utilizes above-mentioned clamp 100 fixed artificial blood vessel 200, can effectively avoid artificial blood vessel 200 to appear the fold, reduces weeping risk. In addition, the clamp 100 is simple in structure and convenient to use, can be installed rapidly, and is beneficial to reducing operation difficulty and improving operation speed, so that operation efficiency is improved.

The present application also provides a blood pump (not shown) comprising a pump body (not shown), an artificial blood vessel 200 and a clip 100. The pump body has an outlet tube (not shown), the artificial blood vessel 200 is sleeved on the outlet tube, and the split ring 10 of the clamp 100 is sleeved on the artificial blood vessel 200 and the outlet tube, so that the artificial blood vessel 200 is clamped between the split ring 10 and the outlet tube.

The blood pump that this application provided through improving clamp 100 structure, can effectively improve the fixed effect of being connected and the leakproofness of vascular prosthesis 200 and the pump body, reduces vascular prosthesis 200 hourglass blood and damaged risk to clamp 100 simple structure, convenient to use can also reduce the operation degree of difficulty, promote operation speed, thereby improves operation efficiency.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. A clamp, characterized in that it comprises:

2. The clip of claim 1, wherein the first stop is a first boss and the second stop is a second boss, the first boss and the second boss being staggered along an axial direction of the split ring.

3. The clip of claim 2, wherein the first end is further provided with a relief groove corresponding to the location of the second stop member, the second stop member extending partially into the relief groove when the open-ended ring is locked.

4. The clip of claim 1, wherein the end of the first stop opposite the second stop and the end of the second stop opposite the first stop are each arcuate.

5. The clip of claim 1, wherein when the open ended collar is locked, none of the first stop and the second end, the second stop and the first end, and the first stop and the second stop are in contact.

6. The clip of claim 1, wherein the first stop and the second stop have a thickness in a radial direction of the split ring that is greater than a thickness of a body of the split ring.

7. The clamp according to any one of claims 1-6, further comprising a connecting ring coaxially arranged with the split ring and partially connected to one axial side of the split ring such that a through slot is formed between the split ring and the connecting ring, wherein a positioning protrusion is provided on an outer wall of the connecting ring.

8. The clip of claim 7, wherein the first stop is disposed at an edge distal from the first end of the connecting ring in the axial direction.

9. The clip of claim 7, wherein the latch assembly includes a catch and a catch tab, the catch tab being disposed on the outer wall of the first end and the catch tab being disposed on the outer wall of the second end, the catch tab being engageable with the catch tab to reduce the inner diameter of the split ring and prevent the inner diameter of the split ring from becoming larger.

10. A blood pump, the blood pump comprising:

a pump body having an outlet tube;

the artificial blood vessel is sleeved on the outlet pipe;

the clip of any one of claims 1-9, wherein the split ring of the clip is configured to fit over an artificial blood vessel, and wherein the locking assembly is configured to lock the first end and the second end after the first end and the second end are positioned adjacent to each other such that the split ring is configured to compress the artificial blood vessel fitted over the outlet tube against the outlet tube.