CN201135658Y

CN201135658Y - Pressure pushing device for PTCA

Info

Publication number: CN201135658Y
Application number: CNU2008200785350U
Authority: CN
Inventors: 赵杰; 王征; 吕向东
Original assignee: LONGMAI MEDICAL EQUIPMENT (BEIJING) CO Ltd
Current assignee: LONGMAI MEDICAL EQUIPMENT (BEIJING) CO Ltd
Priority date: 2008-01-14
Filing date: 2008-01-14
Publication date: 2008-10-22
Anticipated expiration: 2018-01-14

Abstract

The utility model relates to a pressure thrusting and injecting device for PTCA, which comprises a thrusting tube arranged in a needle tube, and thread is arranged on the outer surface of the thrusting tube; a locking mechanism is suited and arranged at the open end of the needle tube, the locking mechanism comprises a casing body, a spanner, an elastic device and a locked sliding block which are buckled mutually, wherein, the locked sliding block is contained in the casing body, the locked sliding block comprises a first tooth surface and a second tooth surface; a casing body axle is provided with the spanner, and the spanner can be rotated, the spanner is provided with a third tooth surface, and the third tooth surface is meshed with the first tooth surface; a containing groove is arranged in the casing body, the thrusting tube is contained in the containing groove and can be glided, and the second tooth surface is meshed with the thread on the outer surface of the thrusting tube; a baffle is arranged in the casing body, a moving space is arranged between the baffle and the locked sliding block, the elastic device is contained in the moving space, the baffle is connected at one end of the elastic device, and the other end is connected with the locked sliding block. By adopting the structure, the pressure thrusting and injecting device for the PTCA with an automatic locking function, convenient operation and high safety performance can be obtained.

Description

PTCA pressure injector

Technical field

This utility model relates to a kind of structural improvement that is used for the PTCA compression pump of balloon dilatation, especially in regard to the improvement of its lock solid structure.

Background technology

The PTCA compression pump is a kind of equipment commonly used in balloon dilatation, existing P TCA compression pump, locking function generally fairly simple, need manual operation to lock, its operation is easy inadequately, and because the locking poor effect may produce rebound effect, its security performance is not high.

The utility model content

In view of this, the technical problem that this utility model solved is to provide a kind of auto-lock function that has, PTCA pressure injector easy to use and that security performance is high.

This utility model PTCA is with the technical scheme of pressure injector: comprise the ejector sleeve that is placed in the needle tubing, this ejector sleeve can slide in needle tubing under the effect of external force, and this ejector sleeve outer surface is provided with screw thread; This needle tubing opening is arranged with locked mechanism, and this locked mechanism comprises housing, spanner, elastic device and the lock slider of mutual fastening, and wherein: be equipped with lock slider in this housing, this lock slider comprises first flank of tooth and second flank of tooth; This housing shaft is provided with spanner, and this spanner can rotate, and this spanner has the 3rd flank of tooth, and the 3rd flank of tooth and first flank engagement by the meshing relation of the 3rd flank of tooth and first flank of tooth, are moved spanner and can be driven the lock slider motion; Be provided with storage tank in this housing, this ejector sleeve is placed in this storage tank, and slidably, the screw-threaded engagement of above-mentioned second flank of tooth and ejector sleeve outer surface; This housing is provided with baffle plate, has mobile space between this baffle plate and lock slider, ccontaining elastic device in this mobile space, and this elastic device one end connects baffle plate, and the other end connects lock slider.

Wherein, this housing is provided with fixed axis, and this spanner is provided with axis hole, and this fixed axis is established spanner by this axis hole axle, and spanner can serve as that axle rotates with this fixed axis.

Wherein, be provided with guide rail in this housing, this lock slider is provided with the guide groove that is complementary with this guide rail, and this lock slider slides in housing along this guide rail.

Wherein, this second flank of tooth is the inclined-plane, and this second flank of tooth and screw thread mesh fully.

Wherein, this needle tubing has stiff end, the holddown groove that this housing has and this stiff end is complementary, and housing is fixed in needle tubing by this holddown groove.

Wherein, this ejector sleeve has handle, and this handle is a cross structure.

Wherein, this elastic device is a spring.

Wherein, this housing is fixing by the screw locking.

Wherein, this spanner is a S type structure.

The beneficial effects of the utility model are:

1, utilize the locked mechanism of the present utility model can be so that PTCA can realize auto-lock function with the pressure injector, availability and safety in operation process improve greatly.

2, utilize the guide groove design of the guide rail and the lock slider of housing, make lock slider more firm in motor process, security performance is higher.

3, utilize the inclined design of second flank of tooth, making screw-threaded engagement tightr of lock slider and ejector sleeve even second flank of tooth has indivedual teeth to damage, does not still influence the self-locking effect of this PTCA with the pressure injector.

4, housing is fixed by holddown groove and needle tubing, and is simple in structure, is easy to assembling and volume production.

5, the cross structure of ejector sleeve handle, more convenient gripping is used more comfortable.

6, the spanner shape should be the S type, employing be lever principle slide lock slide block.

7, the self-locking mechanism that is combined into worm and gear of lock slider and ejector sleeve has reverse self-lock ability.

Description of drawings

Fig. 1 is the overall structure perspective diagram of PTCA of the present utility model with the pressure injector;

Fig. 2 A is the internal structure enlarged diagram of Fig. 1 middle shell;

Fig. 2 B looks the perspective structure enlarged diagram for the left side with 1 middle shell;

Fig. 2 C is the fastening structure enlarged diagram of Fig. 1 middle shell;

Fig. 3 is the structure for amplifying sketch map of the spanner in this utility model;

Fig. 4 A is the magnification fluoroscopy structural representation of the lock slider in this utility model;

Fig. 4 B looks sketch map for the left side of Fig. 4 A;

Fig. 4 C is the structural representation of looking up of Fig. 4 B;

Fig. 5 is the ejector sleeve structural representation in this utility model;

Fig. 6 is the left TV structure sketch map of Fig. 5.

The specific embodiment

Extremely shown in Figure 6 as Fig. 1, PCCA compression pump of the present utility model, it comprises the ejector sleeve 2 that is placed in the needle tubing 1, and this ejector sleeve 2 can slide in needle tubing 1 under the effect of external force, and, and read reading by Pressure gauge A by the controlled pressure that is used for of this ejector sleeve.Of the present utility model focusing on, these ejector sleeve 2 outer surfaces are provided with screw thread 21 (seeing also Fig. 5); This needle tubing 1 opening is arranged with locked mechanism 3, this locked mechanism 3 comprises housing 31, spanner 32, elastic device 33 and the lock slider 34 of mutual fastening, wherein: be equipped with lock slider 34 in this housing 31, this lock slider 34 comprises first flank of tooth 341 and second flank of tooth 342 (seeing also Fig. 4 A-C); 31 of this housings are provided with spanner 32, and this spanner 32 can rotate; In the present embodiment, this housing 31 is provided with fixed axis 5, this spanner is provided with axis hole 321 (seeing also Fig. 3), this fixed axis 5 is established spanner 32 by 321 of this axis holes, and spanner 32 can serve as that axle rotates with this fixed axis 5, and this spanner can be for being S type structure, this spanner 32 has the 3rd flank of tooth 323, the 3rd flank of

tooth

323 and 341 engagements of first flank of tooth by the meshing relation of the 3rd flank of tooth 323 and first flank of tooth 341, are moved spanner 32 and can be driven lock slider 34 motions; Be provided with storage tank 6 in this housing 31, this ejector sleeve 2 is placed in this storage tank 6 (seeing also Fig. 2), and slidably, above-mentioned second flank of tooth 342 meshes with the screw thread 21 of ejector sleeve 2 outer surfaces, by the meshing relation of second flank of tooth and ejector sleeve thread surface, fixedly the position of ejector sleeve can oneself not slided it; This housing 1 is provided with baffle plate 7, and 34 of this baffle plate 7 and lock sliders have mobile space 71, ccontaining elastic device 33 in this mobile space 71, and these elastic device 33 1 ends connect baffle plate 7, and the other end connects lock slider 34.

When practical operation, when needs promote ejector sleeve, with hand lower ejector lever 32, this moment, spanner 32 was rotated by fixed axis 5, by first flank of tooth 341 of the 3rd flank of tooth 323 drives on the spanner with its engagement, make lock slider 34 move upward, this moment, second flank of tooth 342 contacted with the meshing relation of ejector sleeve thread surface 21, simultaneously, elastic device 33 is compressed.In this specific embodiment, this elastic device 33 is a spring.Because second flank of tooth 342 contacts with the meshing relation of ejector sleeve thread surface 21, at this moment, only need the external force effect, then ejector sleeve 2 just can move in needle tubing 1.For the ease of operation, the ejector sleeve in the present embodiment has handle 22, and this handle can be set to cross structure, as shown in Figure 6.When reaching needed pressure, the spanner 32 that relieving is depressed, at this moment, because the reset response of spring forces lock slider 34 to move downward, mesh again with ejector sleeve thread surface 21 up to second flank of tooth 342, in order to have better engagement effect, in the present embodiment, this second flank of tooth 342 can be an inclined design, makes second flank of tooth 342 mesh fully with screw thread 21.Like this, can realize the auto-lock function of PTCA easily, make PTCA of the present utility model more very easy to use, and security performance be very high with the pressure injector with the pressure injector.

In addition, see also shown in Fig. 2 A and Fig. 4 A-C, in the present embodiment, be provided with guide rail 8 in this housing 31, this lock slider 34 is provided with the guide groove 9 that is complementary with this guide rail 8, this lock slider 34 slides in housing 31 along this guide rail 8, utilizes this structure can be so that lock slider 34 more firm being fixed in the housing, and its sliding effect is more reliable.

In this utility model, this needle tubing 1 has stiff end 11, the holddown groove 12 that this housing 31 has and this stiff end 11 is complementary, and housing 31 is fixed in needle tubing by this holddown groove 12.In addition, housing can also be fixing by screw 13 lockings.Certainly, this housing can also adopt existing other fixing means to fix, and is for example bonding, pegs graft or one-body molded etc.

In sum; this utility model is from application target; on the usefulness; viewpoint such as progressive and novelty is set forth; the practical improvement that it has; function enhancement and use important document that Patent Law is emphasized have been met; explanation and accompanying drawing that this utility model is above; it only is preferred embodiment of the present utility model; be not to limit to this utility model with this; therefore; all all and this utility model structures; device; features etc. are approximate; duplicate; be allly to replace or modification etc. according to this utility model patent claim being equal to of doing, all should still belong within the scope of patent application protection of the present utility model.

Claims

1, a kind of PTCA pressure injector comprises the ejector sleeve that is placed in the needle tubing, and this ejector sleeve can slide in needle tubing under the effect of external force, it is characterized in that:

This ejector sleeve outer surface is provided with screw thread;

This needle tubing opening is arranged with locked mechanism, and this locked mechanism comprises housing, spanner, elastic device and the lock slider of mutual fastening, wherein:

Be equipped with lock slider in this housing, this lock slider comprises first flank of tooth and second flank of tooth; This housing shaft is provided with spanner, and this spanner can rotate, and this spanner has the 3rd flank of tooth, and the 3rd flank of tooth and first flank engagement by the meshing relation of the 3rd flank of tooth and first flank of tooth, are moved spanner and can be driven the lock slider motion; Be provided with storage tank in this housing, this ejector sleeve is placed in this storage tank, and slidably, the screw-threaded engagement of above-mentioned second flank of tooth and ejector sleeve outer surface; This housing is provided with baffle plate, has mobile space between this baffle plate and lock slider, ccontaining elastic device in this mobile space, and this elastic device one end connects baffle plate, and the other end connects lock slider.

2, PTCA as claimed in claim 1 pressure injector is characterized in that, this housing is provided with fixed axis, and this spanner is provided with axis hole, and this fixed axis is established spanner by this axis hole axle, and spanner can serve as that axle rotates with this fixed axis.

3, PTCA as claimed in claim 1 pressure injector is characterized in that, is provided with guide rail in this housing, and this lock slider is provided with the guide groove that is complementary with this guide rail, and this lock slider slides in housing along this guide rail.

4, PTCA as claimed in claim 1 pressure injector is characterized in that, this second flank of tooth is the inclined-plane, and this second flank of tooth and screw thread mesh fully.

5, PTCA as claimed in claim 1 pressure injector is characterized in that, this needle tubing has stiff end, the holddown groove that this housing has and this stiff end is complementary, and housing is fixed in needle tubing by this holddown groove.

6, PTCA as claimed in claim 1 pressure injector is characterized in that, this ejector sleeve has handle, and this handle is a cross structure.

7, PTCA as claimed in claim 1 pressure injector is characterized in that, this elastic device is a spring.

8, PTCA as claimed in claim 1 pressure injector is characterized in that, this housing is fixing by the screw locking.

9, PTCA as claimed in claim 1 pressure injector is characterized in that, this spanner is a S type structure.