CN218870414U

CN218870414U - Cutting sacculus blade fixed knot constructs

Info

Publication number: CN218870414U
Application number: CN202223510587.XU
Authority: CN
Inventors: 鲍蓣; 苏宏东; 张艳超
Original assignee: Kinhely Shenzhen Bio Tech Co ltd
Current assignee: Kinhely Shenzhen Bio Tech Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-04-18
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to a cutting sacculus blade fixed knot constructs, belongs to medical instrument technical field, and it includes guiding tube, sacculus body, cutting knife group, go-between and wire, the sacculus body cover is established and is fixed on the guiding tube, the cutting knife group sets up a plurality of, a plurality of cutting knife group sets up in the sacculus body surface; the connecting ring is movably sleeved on the guide tube with damping; one end of the metal wire is connected with the cutting knife group, and the other end of the metal wire is fixedly connected with the connecting ring. This application has the effect that improves the stability of being connected between wire and the sacculus pipe.

Description

Cutting sacculus blade fixed knot constructs

Technical Field

The application relates to the field of medical equipment, in particular to a cutting balloon blade fixing structure.

Background

Currently, balloon dilatation is one of the most commonly used operating techniques for coronary intervention, and the most important mechanism for reducing coronary stenosis by balloon dilatation is that the dilatation leads to intimal-media laceration of the coronary artery with balanced outward expansion of plaque on the vessel wall and slight compression of the plaque. Thus, a common balloon dilation may in extreme cases present two completely different complications: the first is that hard fibrotic lesions (especially with some degree of calcification) cannot be balloon-dilated; the second condition is that the intima-media and even intima are severely torn and significant dissection or intravascular hematoma occurs, eventually leading to lumen occlusion, and the cutting balloon significantly overcomes these drawbacks of the conventional balloon.

The cutting saccule is a device which organically combines a common saccule and a surgical micro-blade together, the surface of the saccule is provided with 3 to 4 longitudinally parallel blades, the blades are wrapped in a saccule crease when the saccule is not expanded, and the blades protrude out of the surface of the saccule when the saccule is expanded. When the cutting balloon is expanded, the sharp blade is exposed, the arteriosclerosis plaque and the vessel wall are cut along the longitudinal direction of the vessel wall, the annular pressure is reduced, the target lesion can be expanded to the maximum degree with the minimum force and the minimum time, and compared with the common balloon expansion, the cutting balloon can limit the damage of the lesion blood vessel intima caused by the balloon expansion to the incision, so that irregular tearing is reduced.

In the related art, a balloon is sleeved and fixed on a catheter for guiding, the balloon is positioned at one end of the catheter, and the catheter slightly extends out of the balloon for a short distance; the blade on the surface of the sacculus is embedded into the surface of the sacculus and is fixedly adhered, in order to prevent the blade from falling off from the surface of the sacculus, two ends of the blade are connected with catheters at two ends of the sacculus through metal wires, and one end of the metal wire, which is far away from the blade, is fixedly welded on the catheters.

In the related art, the metal wire is thin, so that the connection strength of the metal wire at the welding point of the metal wire and the catheter is low, and the metal wire is pulled by the blade moving along with the balloon in the process of balloon expansion, so that the metal wire is easily broken at the welding point of the metal wire and the catheter.

SUMMERY OF THE UTILITY MODEL

In order to improve the stability of being connected between wire and the sacculus pipe, this application provides a cutting sacculus blade fixed knot constructs.

The application provides a pair of cutting sacculus blade fixed knot constructs adopts following technical scheme:

a cutting balloon blade fixing structure comprises a guide tube, a balloon body, a plurality of cutting knife sets, a connecting ring and a metal wire, wherein the balloon body is sleeved and fixed on the guide tube, and the plurality of cutting knife sets are arranged on the outer surface of the balloon body; the connecting ring is movably sleeved on the guide tube with damping; one end of the metal wire is connected with the cutting knife group, and the other end of the metal wire is fixedly connected with the connecting ring.

Through adopting above-mentioned technical scheme, when the sacculus expansion, the wire follows the cutting knife group motion and the atress is tensile, the pulling force conduction of the last wire of connecting of a plurality of cutting knife groups is to go up go-between department, because go-between movable sleeve establishes on the guiding tube and compress tightly on the guiding tube through the adapter sleeve, under the common pulling force effect of the wire of connecting on a plurality of cutting knife groups, when a certain moment pulling force is too big, the wire pulling go-between takes place to rotate or the slip displacement between guiding tube and adapter sleeve, thereby play the cushioning effect, avoid as far as possible under the effect of great pulling force, the wire is in the junction department fracture with the go-between, the stability of being connected between wire and the sacculus pipe has been promoted.

Optionally, the connecting ring is made of a material capable of elastically deforming, a plurality of adjusting notches are arranged at intervals on the edge of the connecting ring, and one end, far away from the cutting knife group, of each of the plurality of metal wires is connected between two adjacent adjusting notches of the connecting ring.

Through adopting above-mentioned technical scheme, when the go-between links together the wire on all cutting knife tackle, through the setting of adjustment breach, a plurality of wires that will set up on the go-between are independent each other and come out, because the go-between itself can take place elastic deformation, at the wire atress in-process, according to the difference of the tensile force size that every wire receives, the go-between can correspond the elastic deformation that takes place in the part between two adjacent adjustment breachs to play the effect of adjusting every wire of buffering respectively.

Optionally, the connecting ring is provided with a plurality of the adjusting notches at a position between two adjacent metal wires.

Through adopting above-mentioned technical scheme, compare in the connected mode that respectively is provided with a wire in the both sides of an adjustment breach, the setting of a plurality of adjustment breachs between two adjacent wires, when a wire drives the part of go-between two adjacent adjustment breachs and takes place elastic deformation, through the cushioning effect of a plurality of adjustment breachs between two adjacent wires, can minimize the mutual interference between two adjacent wires.

Optionally, the connecting rings are movably sleeved at the positions of the guiding tube on the two sides of the balloon body, and the two ends of the cutting knife group are correspondingly connected with the connecting rings at the two ends of the balloon body through the metal wires respectively.

By adopting the technical scheme, the stability of connection between the cutting knife group and the balloon catheter is further improved.

Optionally, the cutting knife group includes a plurality of blades, two adjacent blades are collinear and arranged at intervals, the two adjacent blades are connected through the metal wire, and the two blades on two sides of the cutting knife group are correspondingly connected with the connecting rings at two ends of the balloon body through the metal wire.

By adopting the technical scheme, on the premise that the cutting lengths are approximately the same, compared with the condition that the cutting knife set only consists of one complete blade, on one hand, the cutting knife set can be bent between the two blades at the bending part of the blood vessel through the balloon, so that the passing capacity of the balloon is improved, on the other hand, in the process of expanding the balloon body, the force applied to the cutting knife set by the balloon body is dispersed to the multiple blades, the two adjacent blades are connected through the metal wire, and relative displacement can be generated while the two blades are connected; and because the stress borne by the two blades on the two sides is reduced, the tension of the metal wire at the connecting point of the metal wire and the connecting ring is smaller, the metal wire is not easy to break, and the connection stability between the metal wire and the balloon catheter is further improved.

Optionally, the wires are in a relaxed, bent state when the balloon body is prior to expansion.

By adopting the technical scheme, when the balloon body is expanded, the loosely bent metal wire is gradually straightened and tensioned, and the metal wire is prevented from generating tension at the connecting point of the connecting ring in the process of expanding the balloon as much as possible, so that the stability of connection between the metal wire and the balloon catheter is further improved.

Optionally, the connecting rings and the metal wires are integrally formed, the connecting rings are spirally and movably sleeved on the guide tubes, and the connecting rings sleeved on the guide tubes are mutually wound in a staggered manner.

Through adopting above-mentioned technical scheme, spiral helicine go-between itself can be stretched or twist reverse, and at the in-process of sacculus body expansion, the deformation takes place for the wire pulling go-between to play the cushioning effect, avoid as far as possible under the effect of great pulling force, the wire is at the junction department fracture with the go-between, has promoted the stability of being connected between wire and the sacculus pipe.

Optionally, a fastening sleeve is sleeved on the outer side of the connecting ring, the fastening sleeve is sleeved on the outer side surface of the connecting ring, and the fastening sleeve presses the connecting ring onto the guide tube.

Through adopting above-mentioned technical scheme, the protective action to the go-between is played on the one hand in setting up of adapter sleeve, and on the other hand, avoids the go-between slippage from the guiding tube as far as possible, has further promoted the stability of being connected between wire and the sacculus pipe.

Drawings

Fig. 1 is a schematic structural view of a cutting balloon blade fixing structure according to embodiment 1 of the present application.

Fig. 2 is a partially enlarged view of a portion in example 1 of a cutting balloon blade fixing structure according to the present application.

Fig. 3 is a schematic structural view of an embodiment 2 of a cutting balloon blade fixing structure according to the present application.

Description of reference numerals: 1. a guide tube; 2. a balloon body; 3. a cutting knife set; 31. a blade; 4. a connecting ring; 41. adjusting the gap; 5. a metal wire; 6. and (7) fastening sleeves.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses cutting sacculus blade fixed knot constructs.

Example 1

Referring to fig. 1 and 2, the cutting balloon blade fixing structure comprises a guide tube 1, a balloon body 2, cutting knife sets 3, a connecting ring 4 and metal wires 5, wherein the balloon body 2 is sleeved and fixed on the guide tube 1, the cutting knife sets 3 are provided with three sets, and the three sets of cutting knife sets 3 are parallel to each other and are uniformly arranged at intervals around the outer surface of the balloon body 2; the two connecting rings 4 are movably sleeved on the positions of the guiding tube 1 on the two sides of the balloon body 2 in a damping manner; two ends of the cutting knife group 3 are respectively connected with two connecting rings 4 through metal wires 5, one end of each metal wire 5 is movably arranged on the cutting knife group 3 in a penetrating way, and the other end of each metal wire 5 is fixedly welded with the connecting rings 4; when the balloon body 2 is in a relaxed, curved state prior to expansion, the wires 5.

When the sacculus expands, the metal wire 5 of lax bending follows the motion of cutting knife group 3 and atress is straightened and taut gradually, the pulling force conduction of the metal wire 5 who connects to go up a plurality of cutting knife groups 3 go up go-between 4 department, because go-between 4 activity cover is established on the guiding tube 1 and compress tightly on the guiding tube 1 through adapter sleeve 6, under the common pulling force effect of the metal wire 5 who connects on a plurality of cutting knife groups 3, when a certain pulling force is too big in the twinkling of an eye, metal wire 5 pulling go-between 4 takes place to rotate or slide the displacement on the guiding tube 1, thereby play the cushioning effect, avoid as far as possible under the effect of great pulling force, metal wire 5 breaks at the junction with go-between 4, the stability of being connected between metal wire 5 and the sacculus pipe has been promoted.

Referring to fig. 1 and 2, the connecting ring 4 is a crown-shaped ring with a plurality of adjusting notches 41 formed at two ends thereof in a staggered manner, the crown-shaped ring is made of an elastic metal material, one end of each metal wire 5, which is far away from the cutting knife group 3, is connected between two adjacent adjusting notches 41 of the connecting ring 4, and two adjusting notches 41 are formed between two adjacent metal wires 5. When the metal wire 5 of go-between 4 on with all cutting knife tackle 3 links together, through the setting of adjustment breach 41, a plurality of metal wires 5 that will set up on go-between 4 are independent each other out, because go-between 4 itself can take place elastic deformation, at metal wire 5 atress in-process, according to the difference of every metal wire 5 pulling force size that receives, go-between 4 part between two adjacent adjustment breach 41 can correspond takes place elastic deformation, thereby play the effect of adjusting every metal wire 5 of buffering respectively. The arrangement of the plurality of adjustment notches 41 between two adjacent metal wires 5 can reduce mutual interference between two adjacent metal wires 5 as much as possible by the buffer action of the two adjustment notches 41 between two adjacent metal wires 5 when one metal wire 5 drives the connecting ring 4 to elastically deform at the part between the two adjacent adjustment notches 41.

Referring to fig. 1 and 2, the cutting knife group 3 is composed of two blades 31, two adjacent blades 31 are collinear and spaced, the two adjacent blades 31 are connected through a metal wire 5, and two ends of the two blades 31, which are far away from each other, are correspondingly connected with two connecting rings 4 at two ends of the balloon body 2 through the metal wire 5. On the premise that the cutting lengths are approximately the same, compared with the condition that the cutting knife set 3 is only composed of one complete blade 31, on one hand, the cutting knife set 3 of the balloon at the position where the balloon bends through the blood vessel can be bent between the two blades 31, so that the passing capacity of the balloon is improved, on the other hand, in the process of expanding the balloon body 2, the force applied to the cutting knife set 3 by the balloon body 2 is dispersed to the plurality of blades 31, the two adjacent blades 31 are connected through the metal wire 5, and the two blades 31 can be relatively displaced while being connected; and because the stress borne by the two blades 31 on the two sides is reduced, the tension of the metal wire 5 at the connecting point of the connecting ring 4 is smaller, the metal wire is not easy to break, and the stability of connection between the metal wire 5 and the balloon catheter is further improved.

Referring to fig. 1 and 2, the end cover that is close to sacculus body 2 at guiding tube 1 is equipped with adapter sleeve 6, adapter sleeve 6 with go-between 4 cover establish with interior, adapter sleeve 6 compresses tightly go-between 4 on guiding tube 1 the setting of adapter sleeve 6 play the guard action to go-between 4 on the one hand, on the other hand, avoids go-between 4 slippage from guiding tube 1 as far as possible, has further promoted the stability of being connected between wire 5 and the sacculus pipe.

The implementation principle of the embodiment 1 is as follows: in the process of balloon expansion, the connecting ring 4 is displaced and deformed to play a role in buffering, so that the tension of the metal wire 5 at the connecting point of the connecting ring 4 is reduced as much as possible, the metal wire 5 is not easy to break at the connecting point of the connecting ring 4, and the stability of connection between the metal wire 5 and the balloon catheter is improved.

Example 2

Referring to fig. 1 and 3, the present embodiment is different from embodiment 1 in that a connection ring 4 and a metal wire 5 are integrally formed, the connection ring 4 is spirally and movably sleeved on a guide tube 1, and a plurality of connection rings 4 sleeved on the guide tube 1 are alternately wound. The implementation principle of the embodiment 2 is as follows: spiral helicine go-between 4 itself can be stretched or twist reverse, and at the in-process of the expansion of sacculus body 2, deformation and displacement take place for 5 pulling go-between 4 of wire to play the cushioning effect, avoid as far as possible under the effect of great pulling force wire 5 with the tie-between 4 the junction department fracture, promoted the stability of being connected between 5 of wire and the sacculus pipe.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A cutting balloon blade (31) fixing structure, characterized in that: the balloon cutting device comprises a guide tube (1), a balloon body (2), a plurality of cutting knife sets (3), a connecting ring (4) and metal wires (5), wherein the balloon body (2) is sleeved and fixed on the guide tube (1), the cutting knife sets (3) are arranged, and the cutting knife sets (3) are arranged on the outer surface of the balloon body (2); the connecting ring (4) is movably sleeved on the guide pipe (1) with damping; one end of the metal wire (5) is connected with the cutting knife group (3), and the other end of the metal wire (5) is fixedly connected with the connecting ring (4).

2. A cutting balloon blade (31) fixing structure according to claim 1, characterized in that: the connecting ring (4) is made of a material capable of elastically deforming, a plurality of adjusting notches (41) are formed in the edge of the connecting ring (4) at intervals, and one end, far away from the cutting knife group (3), of each metal wire (5) is connected between two adjacent adjusting notches (41) of the connecting ring (4).

3. A cutting balloon blade (31) fixing structure according to claim 2, wherein: the connecting ring (4) is provided with a plurality of adjusting gaps (41) between two adjacent metal wires (5).

4. A cutting balloon blade (31) fixing structure according to claim 1, characterized in that: the position of the guide tube (1) on two sides of the balloon body (2) is respectively movably sleeved with the connecting ring (4), and two ends of the cutting knife group (3) are correspondingly connected with the connecting rings (4) at two ends of the balloon body (2) through the metal wires (5).

5. A cutting balloon blade (31) fixing structure according to claim 4, characterized in that: the cutting knife tackle (3) comprises a plurality of blades (31), two adjacent blades (31) are collinear and arranged at intervals, two adjacent blades (31) are connected through the metal wire (5), the two blades (31) on two sides of the cutting knife tackle (3) are correspondingly connected through the metal wire (5) and the connecting rings (4) at two ends of the balloon body (2).

6. A cutting balloon blade (31) fixing structure according to claim 1, characterized in that: when the balloon body (2) is in a relaxed and bent state before expansion, the wires (5) are in a relaxed and bent state.

7. A cutting balloon blade (31) fixing structure according to claim 1, characterized in that: the connecting rings (4) and the metal wires (5) are integrally formed, the connecting rings (4) are movably sleeved on the guide tube (1) in a spiral shape, and the connecting rings (4) sleeved on the guide tube (1) are mutually wound in a staggered mode.

8. The structure for fixing a cutting balloon blade (31) according to any one of claims 1 or 7, wherein: the outer side of the connecting ring (4) is sleeved with a fastening sleeve (6), the fastening sleeve (6) is sleeved on the outer side surface of the connecting ring (4), and the connecting ring (4) is pressed on the guide tube (1) through the fastening sleeve (6).