CN2862980Y

CN2862980Y - Apparatus for putting a blood vessel rack

Info

Publication number: CN2862980Y
Application number: CN 200520127374
Authority: CN
Inventors: 李潮
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-10
Filing date: 2005-10-10
Publication date: 2007-01-31
Anticipated expiration: 2015-10-10

Abstract

The utility model relates to a blood vessel frame feeder, a medical instrument, comprising a sheath and a feeding rod. The feeding rod is made up of an end rod and a push rod. The end rod comprises a feeding end and a connection ring. The feeding end is connected with the connection ring to form an integral body. The connection ring is an elastic connecting body. An end rod is fixed onto the front end of the sheath with the connection ring. The feeding end is connected with the push rod in its axial direction with a leader. The leader is connected to a trigger rod. The trigger rod is in the center of the push rod. A lock device is provided at the connection area between the push rod end and the trigger rod. The sheath end provides a lock device on its contact area with the push rod. A space is provided to place blood vessel frame between the push rod and the connection ring inside the sheath area. The utility model can meet the requirements of feeding special shape of frame feeders. Its operation is convenient, and its utilization safety can be improved. The utility model makes for expanding the application scope of blood vessel restoration surgery.

Description

Intravascular stent is sent into device

Technical field

This utility model is a kind of equipment of sending into that is used for sending into support in blood vessel, especially sends into erose support, belongs to Medical Instruments.

Background technology

In the treatment of angiopathy,, due to illness become and cause that lumen of vessels is interior narrow or damaged especially for diseases such as hemangioma, interlayer tumors, introductory technique commonly used is treated, be about to intravascular stent and send into the arterial disease position, in lumen of artery, rebuild arterial wall, recover the tremulous pulse normal blood flow.Sending into of intravascular stent needs the auxiliary realization of instrument, and be higher to the accuracy requirement of sending into the position.The existing device of sending into can be sent into the successive intravascular stent of integral body, and for some special shapes intravascular stent, shape as shown in Figure 1, because it has bending angle, therefore when inserting, existing intravascular stent is sent into device and is difficult to the type intravascular stent be compressed and send in the blood vessel, and existing in addition intravascular stent is sent into device because the targeting part size of front end is fixed, when withdrawing from, have any problem, easily influence the fixing of intravascular stent position.

Summary of the invention

The purpose of this utility model provides a kind of intravascular stent rational in infrastructure and sends into device, can push complex-shaped intravascular stent, and the location is reliable, withdraws from easily, improves the dependability and the popularity of stent therapy.

The designed intravascular stent of this utility model is sent into device and mainly is made of sheath and push rod, push rod is positioned at sheath, push rod can move in sheath, push rod is made up of end bar and catch bar, the end bar constitutes by pushing head and connecting ring, the propelling movement head is connected and fixed with connecting ring and is integral, connecting ring is a nonrigid connector, the end bar is fixed in the front end of sheath by connecting ring, pushing head axially is connected with catch bar by guide rod, guide rod is connected with frizzen, frizzen is positioned at the catch bar center, stretches out outside the catch bar, and catch bar end and frizzen junction have locking device, the end of sheath and catch bar contact site have locking device, are positioned at the inner bit strip of sheath between catch bar and the connecting ring and are useful on the space of placing intravascular stent.

Propelling movement head, guide rod and the frizzen that intravascular stent is sent into device all has the axle center hole of connection, and guide pipe wherein is installed.

For preventing to make connecting ring compressive deformation in blood vessel, have bearing rib at its axial direction.

This utility model is sent into the vascular lesion place with intravascular stent as shown in Figure 1 by sending into device when using.Intravascular stent is compressed between end bar and the catch bar, the locking device of sheath end and the locking device of catch bar end are locked, remain unchanged in the position of sending into the process intravascular stent, torsional deformation can not appear, intravascular stent is released after sending into the blood vessel precalculated position, locking device with the catch bar end unclamps earlier, promote frizzen gently forward, the end bar is moved forward, hold this moment the connecting ring and the sheath of bar to break away from, because connecting ring has elasticity, the end diameter of connecting ring is dwindled under elastic reaction, unclamp the locking device of sheath end, the pushing catch bar discharges intravascular stent, then when push rod withdraws from, pull back frizzen, because the connecting ring of end bar is an elastomer, the propelling movement head is retreated in the connecting ring, thus the length of dwindling the end bar, make to push when head withdraws from the intravascular stent of bending to be difficult for running into the intravascular stent wall that fixed placement is good, avoid causing that move the intravascular stent position or problem such as breakage.

This utility model can make things convenient for the special intravascular stent of compression shape, and also be suitable for for the tubular intravascular stent that generally uses, enlarged the range of application of sending into device, and easy to operate, help improving the success rate of arteries operation and enlarge the scope of implementing operation.

Description of drawings

Fig. 1 is a kind of structure chart of intravascular stent.

Fig. 2 is the structure chart that a kind of intravascular stent of the present utility model is sent into device.

Fig. 3 is the structural representation of Fig. 2 middle-end bar.

The specific embodiment

Embodiment 1

Intravascular stent is as shown in Figure 2 sent into device, mainly is made of sheath 1 and push rod 2, and push rod 2 is positioned at sheath 1, and push rod 2 can move in sheath 1.Push rod is made up of end bar 3 and catch bar 5, end bar 3 by push 6 and connecting ring 7 constitute, pushing 6 is connected and fixed with connecting ring 7 and is integral, pushing 6 is the rigidity body, connecting ring 7 is a nonrigid connector, deformable, end bar 3 connects the end that is positioned sheath 1 by connecting ring 7, pushing 6 axially is connected with catch bar 5 by guide rod 8, guide rod 8 is connected with frizzen 9, frizzen 9 is positioned at catch bar 5 centers, stretch out outside the catch bar 5, guide rod 8 all can move in the centre bore 10 of catch bar 5 with frizzen 9, and catch bar 5 ends and frizzen 9 junctions have locking device 12, the end of sheath 1 and catch bar 5 contacts site have locking device 11, are positioned at sheath 1 inner bit strip between catch bar 5 and the connecting ring 7 and are useful on the space of placing intravascular stent 4.An axle center hole that push 6, guide rod 8 and frizzen 9 has connection is wherein installed guide pipe 13, and guide pipe 13 is an elastic hose, has bearing rib 14 at connecting ring 7 axial directions, as shown in Figure 3, is used to prevent curve inwardly behind connecting ring 7 pressurizeds.

In use intravascular stent 4 is compressed in the position, space that is positioned at sheath 1 position between catch bar 5 and the end bar 3, make end bar 3 be fastened on the end of sheath 1 by connecting ring 7, after fixing locking device between push rod 2 and the sheath 1 11 is locked, to prevent push rod 2 and sheath 1 malfunction the end bar 3 of front end is exerted pressure, thereby cause that end bar 3 and sheath 1 break away from, intravascular stent 4 discharges too early.With locking device 12 lockings of catch bar 2, make contact lever 9 fixed-site after relative position is fixing with frizzen 9 junctions.

In sending into process, under the guiding of guide pipe 13, send into device deeply to the sufferer place, be maintained fixed constantly in the position of sending into process medium vessels support 4, torsional deformation can not appear.After sending into device arrival precalculated position, earlier locking device 12 is unclamped, promote frizzen 9 forward, end bar 3 is moved forward, break away from until connecting ring 7 and sheath 1, because connecting ring 7 has elasticity, the end diameter of connecting ring 7 is dwindled under elastic reaction, unclamp locking device 11, pass push rod 2, make intravascular stent 4 be discharged into the precalculated position.To send into device then withdraws from.This moment, the post-tensioning frizzen 9, because connecting ring 9 be an elastomer, made to push 6 and retreat in the connecting ring 7 under the effect of pulling force, made the contraction in length of end bar 3, and the convenient bar 3 of holding withdraws from intravascular stent 4.Intravascular stent 4 as shown in Figure 1, the space that can allow in its bending place to hold bar 3 to withdraw from is limited, shorten the length and the diameter of end bar 3, make to push and be difficult for running into the intravascular stent wall that fixed placement is good when head withdraws from intravascular stent 4, the success rate of placing will be improved greatly, avoid causing that move the intravascular stent position or breakage, improve success rate of operation and cure rate.

This intravascular stent is sent into the requirement of sending into that device has solved the special shape intravascular stent, and easy to operate, safe, reliable, can both send into multiple intravascular stent, has effectively improved the result of use that intravascular stent is sent into device.

Claims

1. an intravascular stent is sent into device, mainly constitute by sheath and push rod, push rod is positioned at sheath, push rod can move in sheath, it is characterized in that: push rod is made up of end bar and catch bar, the end bar constitutes by pushing head and connecting ring, the propelling movement head is connected and fixed with connecting ring and is integral, connecting ring is a nonrigid connector, the end bar is fixed in the front end of sheath by connecting ring, push head and axially be connected with catch bar by guide rod, guide rod is connected with frizzen, and frizzen is positioned at the catch bar center, stretch out outside the catch bar, catch bar end and frizzen junction have locking device, and the end of sheath and catch bar contact site have locking device, are positioned at the inner bit strip of sheath between catch bar and the connecting ring and are useful on the space of placing intravascular stent.

2. intravascular stent according to claim 1 is sent into device, and its feature also is: push the axle center hole that head, guide rod and frizzen all have connection, guide pipe wherein is installed.

3. intravascular stent according to claim 1 is sent into device, and its feature also is: the connecting ring that pushes head has bearing rib at axial direction.