CN111839808A

CN111839808A - Thrombus gun

Info

Publication number: CN111839808A
Application number: CN202010913935.4A
Authority: CN
Inventors: 许文韬; 程旋谟
Original assignee: Sensor Wuxi Intelligent Equipment Co ltd
Current assignee: Sensor Wuxi Intelligent Equipment Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2020-10-30

Abstract

The invention relates to a thrombus gun, which comprises a shell, an inner tube rack and an outer tube rack which are arranged in the shell, an inner tube gear set, an outer tube gear set, a first outer tooth inner ratchet wheel and a toothed trigger, wherein the toothed trigger comprises a trigger body and a trigger rack arranged on the trigger body, the inner tube gear set comprises an inner tube gear and a second outer tooth inner ratchet wheel, the first outer tooth inner ratchet wheel and the second outer tooth inner ratchet wheel respectively comprise a toothed ring of which the outer peripheral surface is provided with occlusion teeth and the inner peripheral surface is provided with ratchet teeth, and a pawl positioned on the inner side of the toothed ring, the outer tube gear set comprises an outer tube gear, a driven gear and an intermediate gear, a first linkage shaft is respectively in key connection with the pawl of the first outer tooth inner ratchet wheel and the inner tube gear through a connecting key, a second linkage shaft is fixedly connected with or in. The thrombus gun of the invention is easy to control the feeding speed and the feeding amount of the catheter.

Description

Thrombus gun

Technical Field

The invention relates to a thrombus treatment device, in particular to a thrombus gun.

Background

Thrombi are small patches of blood flow that form on the surface of a denuded or repaired site within a blood vessel of the cardiovascular system. The pulmonary artery embolus is mostly originated from thrombus in the deep veins of lower limbs and the longitudinal and longitudinal pelvic veins. In order to prevent and reduce the occurrence of pulmonary embolism, the treatment frequently adopts a method of weaving a filter screen in a lower cavity in the lower cavity vein. The Mobin-Uddin umbrella filter system introduced in 1967, which required a cut vein placement. With the development of filters and interventional procedures, the filters need only be introduced through a catheter under a small partial incision during treatment. Currently, the interventional department mostly adopts a hand-pushed catheter to intervene in the vein, so that a filter screen is placed in the vein and the vein thrombus is filtered. Most of the existing treatment equipment is manual, and medical personnel need to insert a catheter into a vein from an incision and slowly push the catheter into the vein. In the operation process, the treatment equipment needs to be connected and fixed with two catheters, namely an inner tube (a filter screen) and an outer tube (a rubber tube), and the two tubes have different motion requirements after entering the vein. Because the existing equipment is simple and crude, and adopts the manual pipe that promotes during the intervention, this kind of operating mode wastes time and energy, and operating personnel is difficult accurate control pipe feed speed and single feed volume, therefore many operating personnel's experience requirement is higher.

In view of the above-mentioned drawbacks, the designer actively makes research and innovation to create a new thrombus gun, so that the thrombus gun has industrial value.

Disclosure of Invention

In order to solve the above-mentioned problems, it is an object of the present invention to provide a thrombus gun in which the catheter feed speed and the amount of feed can be easily controlled.

The invention discloses a thrombus gun, which comprises a shell, an inner tube rack and an outer tube rack which are arranged in the shell, an inner tube gear set for driving the inner tube rack to slide, an outer tube gear set for driving the outer tube rack to slide, a first outer tooth inner ratchet wheel for driving the inner tube gear set and the outer tube gear set to operate and a toothed trigger for driving the outer tooth inner ratchet wheel to rotate, wherein the toothed trigger comprises a trigger body which is arranged on the shell in a sliding way, and a trigger rack which is arranged on the trigger body and is meshed with the first outer tooth inner ratchet wheel, the inner tube gear set comprises an inner tube gear which is meshed with the inner tube rack and is coaxially arranged with the first outer tooth inner ratchet wheel through a first linkage shaft, and a second outer tooth inner ratchet wheel which is meshed with the inner tube gear through meshing teeth, the first outer tooth inner ratchet wheel and the second outer tooth inner ratchet wheel respectively comprise a gear ring of, the outer tube gear set comprises an outer tube gear meshed with an outer tube rack, a driven gear coaxial with an inner ratchet wheel of the second outer tooth is extracted through second linkage, and an intermediate gear meshed with the outer tube gear and the driven gear respectively.

Furthermore, according to the thrombus gun, the gear box is fixedly arranged in the shell, and two ends of the first linkage shaft and two ends of the second linkage shaft are both arranged on the gear box.

Furthermore, according to the thrombus gun, an installation plate is arranged between the first linkage shaft and the second linkage shaft, the end parts of the first linkage shaft and the second linkage shaft penetrate through the through holes in the installation plate, and the main shaft of the intermediate gear is arranged on the installation plate.

Furthermore, the thrombus gun is provided with an output hole on the shell, the end part of the first linkage shaft penetrates through the output hole and is connected with the button, an elastic piece is further arranged between the button and the shell, one end of the elastic piece is connected with the button, and the other end of the elastic piece is connected with the shell.

Furthermore, the thrombus gun is characterized in that the shell is provided with a containing groove, the output hole is positioned in the containing groove, the bottom surface of the containing groove is provided with an installation tube arranged around the output hole, and the elastic piece is a spring sleeved on the installation tube.

Furthermore, the thrombus gun of the present invention is characterized in that an annular flange is provided on an inner side surface of the central hole of the inner tube gear, a key groove having an inclined bottom surface is provided on an end surface of the annular flange on a side close to the connection key, and end surfaces of the guide blocks located on both sides of the key groove are also inclined surfaces adapted to the end surface of the connection key.

Furthermore, the thrombus gun is characterized in that a rack limiting shell is fixedly arranged in the shell, and an inner tube rack guiding hole and an outer tube rack guiding hole which extend from one end of the shell to the other end of the shell are respectively arranged on the rack limiting shell.

Furthermore, the thrombus gun of the invention is characterized in that the inner side surface of the inner tube rack guide hole and the inner side surface of the outer tube rack guide hole are both provided with guide rails, and the inner tube rack and the outer tube rack are respectively provided with guide grooves matched with the guide rails.

Furthermore, the thrombus gun is characterized in that an inner tube connecting piece is arranged at the end part of the inner tube rack, an outer tube connecting piece is arranged at the end part of the outer tube rack, and a handle is further arranged on the inner tube connecting piece.

Furthermore, the thrombus gun is characterized in that a slide rail is arranged on the inner side surface of the shell, and a slide plate or a slide rod matched with the slide rail is arranged on the trigger with teeth.

By the scheme, the invention at least has the following advantages: according to the thrombus gun, the inner tube rack, the outer tube rack, the inner tube gear set, the outer tube gear set, the first outer tooth inner ratchet wheel and other components are arranged, so that reverse feeding of the inner tube and the outer tube is realized, compared with the conventional manual feeding mode, the thrombus gun is controllable in feeding amount and feeding speed and convenient to operate, and therefore the experience requirement on operators is low.

In conclusion, the thrombus gun of the present invention can easily control the catheter feeding speed and the catheter feeding amount.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a perspective view of a thrombus gun with a button not shown;

FIG. 2 is a perspective view of the front housing half;

FIG. 3 is a perspective view of the rear housing half;

FIG. 4 is another perspective view of the thrombus gun, with the front housing half not shown;

FIG. 5 is a perspective view of the internal structure of the thrombus gun;

FIG. 6 is another perspective view of the internal structure of the thrombus gun;

FIG. 7 is a perspective view of the inner tube gear set, the outer tube gear set, and the first externally toothed inner ratchet assembly;

FIG. 8 is an exploded view of the inner tube gear set, the outer tube gear set, and the first externally toothed inner ratchet assembly;

FIG. 9 is a perspective view of the first linkage shaft;

FIG. 10 is a perspective view of the inner tube gear set, the outer tube gear set, the first outer tooth inner ratchet wheel and the toothed wrench assembly;

fig. 11 is a perspective view of a rack stopper housing;

FIG. 12 is a perspective view of a toothed trigger;

fig. 13 is a perspective view of an inner rack;

FIG. 14 is a perspective view of the first outer-tooth inner ratchet or the second outer-tooth inner ratchet;

fig. 15 is a perspective view of the inner tube gear.

The gear box comprises a shell 1, an inner pipe rack 2, an outer pipe rack 3, an inner pipe gear set 4, an outer pipe gear set 5, a first outer tooth inner ratchet wheel 6, a toothed trigger 7, a trigger body 8, a trigger rack 9, a first linkage shaft 10, an inner pipe gear 11, a second outer tooth inner ratchet wheel 12, ratchet teeth 13, a gear ring 14, a pawl 15, an outer pipe gear 16, a second linkage rod 17, a driven gear 18, an intermediate gear 19, a connecting key 20, an inner pipe transmission hole 21, an outer pipe transmission hole 22, a handle 23, a gear box 24, a mounting plate 25, an output hole 26, a button 27, an elastic piece 28, a containing groove 29, a mounting pipe 30, an annular flange 31, a key groove 32, a guide block 33, a rack limiting shell 34, an inner pipe rack guide hole 35, an outer pipe rack guide hole 36, a guide rail 37, a guide groove 38, an inner pipe connecting piece 39, an outer pipe.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to fig. 1 to 15, a thrombus gun according to a preferred embodiment of the present invention includes a housing 1, an inner tube rack 2 and an outer tube rack 3 disposed in the housing, an inner tube gear set 4 for driving the inner tube rack to slide, an outer tube gear set 5 for driving the outer tube rack to slide, a first outer tooth inner ratchet 6 for driving the inner tube gear set and the outer tube gear set to operate, and a toothed trigger 7 for driving the outer tooth inner ratchet to rotate, wherein the toothed trigger includes a trigger body 8 slidably disposed on the housing, a trigger rack 9 disposed on the trigger body and engaged with the first outer tooth inner ratchet, the inner tube gear set includes an inner tube gear 11 engaged with the inner tube rack and coaxially disposed with the first outer tooth inner ratchet via a first linkage shaft 10, a second outer tooth inner ratchet 12 engaged with the inner tube gear via engagement teeth, and the first outer tooth inner ratchet and the second outer tooth inner tooth ratchet each include a ring 14, a ratchet, The ratchet wheel structure comprises a gear ring, pawls 15 which are located on the inner side of the gear ring and correspond to ratchet teeth, an outer pipe gear set comprises an outer pipe gear 16 meshed with an outer pipe rack, a driven gear 18 coaxial with a second outer tooth inner ratchet wheel through a second linkage rod 17, and an intermediate gear 19 respectively meshed with the outer pipe gear and the driven gear, a connecting key 20 is arranged on the circumferential surface of a first linkage shaft, the first linkage shaft is respectively connected with the pawls of the first outer tooth inner ratchet wheel and an inner pipe gear key through the connecting key, the second linkage shaft is fixedly connected or connected with the pawls of the second outer tooth inner ratchet wheel, the end parts of the first linkage shaft and the second linkage shaft are arranged on a shell, the end part of the first linkage shaft penetrates through a through hole in the shell and protrudes out of the outer surface of the shell, an inner pipe transmission hole 21 for the inner pipe to enter and exit is arranged at one end.

According to the thrombus gun, the inner tube rack, the outer tube rack, the inner tube gear set, the outer tube gear set, the first outer tooth inner ratchet wheel and other components are arranged, so that reverse feeding of the inner tube and the outer tube is realized, compared with the conventional manual feeding mode, the thrombus gun is controllable in feeding amount and feeding speed and convenient to operate, and therefore the experience requirement on operators is low. During specific use, operating personnel is connected outer tube and inner tube respectively with the connecting piece on outer tube rack and the inner tube rack, operating personnel removes the trigger rack inboard through the mode of pressing the trigger body after connecting, thereby order about the interior ratchet rotation of the first external tooth with trigger rack meshing, it is specific that the ring gear of ratchet rotates in the first external tooth, along with the rotation of the interior ratchet ring of first external tooth, locate the inboard pawl of ring gear and rotate under the drive of ring gear inner peripheral surface ratchet tooth, and then order about the first universal driving shaft with this pawl key-type connection and rotate, and just rotate under the drive of first universal driving shaft with the coaxial inner tube gear of ratchet in the first external tooth, thereby order about the inner tube rack with inner tube gear meshing and move and drive the inner tube of being connected with inner tube rack and advance along the track on the casing. Meanwhile, the inner tube gear drives the second outer-tooth inner ratchet wheel meshed with the inner tube gear to rotate, the second coupling shaft fixedly connected or connected with the pawl of the second outer-tooth inner ratchet wheel rotates along with the second outer-tooth inner ratchet wheel and drives the driven wheel fixedly connected or connected with the second outer-tooth inner ratchet wheel to rotate, and after the driven wheel rotates, the driven wheel drives the intermediate gear and the outer tube gear meshed with the intermediate gear to rotate, so that the outer tube rack meshed with the outer tube gear is driven to slide, and finally the outer tube connected with the outer tube rack returns along the guide rail on the shell. Due to the arrangement of the intermediate gear, the difference between the inner pipe gear set and the outer pipe gear set is one gear number and comprises the second outer-tooth inner ratchet wheel, and during specific implementation, the difference between the inner pipe gear set and the outer pipe gear set can be an odd number of gears, so that the rotation directions of the inner pipe gear and the outer pipe gear are opposite, the inner pipe rack and the outer pipe rack are driven to move along opposite directions, and finally feeding of the inner pipe and returning of the outer pipe are achieved. When the trigger rack moves to the limit position, an operator can move the trigger rack outwards until the trigger rack returns to the original position, at the moment, because the gear ring of the first external tooth internal ratchet wheel rotates reversely, the pawl inside the first external tooth internal ratchet wheel cannot rotate, the inner pipe and the outer pipe do not move, and after the trigger body returns to the original position, the operator can continuously press the wrench body to repeat the actions. When the advance stroke of the inner pipe reaches the limit, an operator can press the first linkage shaft inwards to separate the connecting key on the first linkage shaft from the key groove on the gear of the inner pipe. After falling off, an operator can pull the inner pipe rack through the handle 23 at the end part of the inner pipe rack to enable the inner pipe rack to drive the inner pipe to retreat, in the retreating process, the inner pipe gear is driven by the inner pipe rack to rotate in the opposite direction when the inner pipe advances, meanwhile, the second outer-tooth inner ratchet wheel is driven by the inner pipe gear to rotate in the opposite direction, and due to the fact that the steering directions are opposite, the pawl of the second outer-tooth inner ratchet wheel cannot rotate, the driven gear coaxial with the pawl cannot rotate, the outer pipe does not move, and therefore the purpose that the outer pipe does not move and the inner pipe retreats is achieved.

Preferably, the thrombus gun of the present invention has a gear box 24 fixed in the housing, and both ends of the first and second linkage shafts are disposed on the gear box.

The gear box realizes the installation and the protection effect on gear components such as an inner pipe gear set and an outer pipe gear set.

Preferably, in the thrombus gun according to the present invention, a mounting plate 25 is further provided between the first linkage shaft and the second linkage shaft, the end portions of the first linkage shaft and the second linkage shaft pass through the through hole in the mounting plate, and the main shaft of the intermediate gear is provided on the mounting plate.

The mounting plate is arranged to realize the mounting of the intermediate gear, the mounting plate is triangular in actual implementation, and the main shafts of the first linkage shaft, the second linkage shaft and the intermediate gear are respectively arranged at three vertex points of the triangular mounting plate.

Preferably, the thrombus gun of the invention is provided with an output hole 26 on the shell, the end part of the first linkage shaft passes through the output hole and is connected with a button 27, an elastic element 28 is further arranged between the button and the shell, one end of the elastic element is connected with the button, and the other end of the elastic element is connected with the shell.

Preferably, the thrombus gun of the present invention has a housing with a receiving groove 29, the output hole is located in the receiving groove, a mounting tube 30 is disposed around the output hole on the bottom surface of the receiving groove, and the elastic member is a spring fitted over the mounting tube.

The arrangement of the button and the elastic piece realizes the clutch of the first linkage shaft and the inner pipe gear. Under normal conditions, the button drives first universal driving shaft to move to the outside under the action of the elastic force of the elastic part to the outside, until the first universal driving shaft is matched with the key groove of the inner pipe gear, during specific implementation, the outer end of the inner pipe gear is provided with a limiting block to limit the first universal driving shaft, and the first universal driving shaft enters the key groove under the elastic force of the elastic part until the end part of the first universal driving shaft contacts with the limiting block. When the first linkage shaft and the inner pipe gear need to be separated, an operator only needs to press the button inwards and drive the first linkage shaft to move inwards until the connecting key on the first linkage shaft is separated from the key groove on the inner pipe gear.

Preferably, in the thrombus gun according to the present invention, an annular flange 31 is provided on an inner side surface of the central hole of the inner tube gear, a key groove 32 having an inclined bottom surface is provided on an end surface of the annular flange on the side close to the connection key, and end surfaces of guide blocks 33 located on both sides of the key groove are also inclined surfaces adapted to the end surface of the connection key.

The inclined plane of guide block terminal surface has realized the guide effect to the connecting piece, and like this, no matter what angle gets into inner tube gear mesopore with first universal driving shaft, in case the connecting key terminal surface on the first universal driving shaft contacts with guide block terminal surface, the connecting key just can get into the keyway smoothly under the guide of guide block inclined plane, and the inclined plane of keyway bottom has realized the limiting displacement to the connecting piece simultaneously.

Preferably, the thrombus gun according to the present invention has a rack stopper housing 34 fixed in the housing, and the rack stopper housing is provided with an inner tube rack guide hole 35 and an outer tube rack guide hole 36 extending from one end of the housing to the other end thereof, respectively.

Preferably, in the thrombus gun according to the present invention, the inner side surface of the inner tube rack guide hole and the inner side surface of the outer tube rack guide hole are both provided with guide rails 37, and the inner tube rack and the outer tube rack are respectively provided with guide grooves 38 adapted to the guide rails.

The arrangement of the rack limiting shell, the inner tube guiding hole, the outer tube guiding hole, the guide rail and the guide groove realizes the purpose that the inner tube rack and the outer tube rack can be arranged on the shell in a sliding manner.

Preferably, the thrombus gun of the present invention is provided with an inner tube connector 39 at an end of the inner tube rack, an outer tube connector 40 at an end of the outer tube rack, and a handle 23 at the inner tube connector.

Preferably, the thrombus gun of the present invention has a slide rail 41 provided on the inner surface of the housing, and a slide plate 42 or a slide bar 43 adapted to the slide rail is provided on the trigger having teeth.

The arrangement of the sliding rail, the sliding plate or the sliding rod ensures that the trigger body can only slide along the direction of the sliding rail when an operator pulls the toothed trigger, thereby ensuring that the trigger rack is always engaged with the meshing teeth of the ratchet wheel in the first external teeth. Wherein, the casing comprises preceding half shell and back half shell.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description.

In addition, the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention. Also, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A thrombus gun, characterized in that: including casing (1), locate inner tube rack (2) and outer tube rack (3) in the casing, drive the gliding inner tube gear train (4) of inner tube rack, drive the gliding outer tube gear train (5) of outer tube rack, drive the interior ratchet (6) of first external tooth of inner tube gear train and outer tube gear train moving and drive the interior ratchet pivoted of external tooth and take tooth trigger (7), take tooth trigger including set up trigger body (8) on the casing slidable, locate trigger body and with trigger rack (9) of the interior ratchet meshing of first external tooth, inner tube gear train includes with inner tube rack toothing and through inner tube gear (10) and the coaxial inner tube gear (11) that sets up of the interior ratchet of first external tooth, second external tooth interior ratchet (12) of interlock tooth and inner tube gear meshing, ratchet all includes ring gear (14) that the outer peripheral face is equipped with the interlock tooth and the inner peripheral face is equipped with ratchet tooth (13) in first external tooth and the second external tooth interior ratchet, The pawl (15) is positioned on the inner side of the gear ring and corresponds to the ratchet teeth, the outer tube gear set comprises an outer tube gear (16) meshed with the outer tube rack, a driven gear (18) coaxial with the inner ratchet wheel of the second outer teeth through a second linkage rod (17), and an intermediate gear (19) respectively meshed with the outer tube gear and the driven gear, a connecting key (20) is arranged on the circumferential surface of the first linkage shaft, the first linkage shaft is respectively connected with the pawl of the inner ratchet wheel of the first outer teeth and the inner tube gear through the connecting key, the second linkage shaft is fixedly connected or connected with the pawl of the inner ratchet wheel of the second outer teeth, the end parts of the first linkage shaft and the second linkage shaft are arranged on the shell, and the end part of the first linkage shaft penetrates through the through hole on the shell and protrudes out of the outer surface of the shell, one end of the shell is provided with an inner tube transmission hole (21) for the inner tube to enter and exit, and the other end of the shell is provided with an outer tube transmission hole (22) for the outer tube to enter and exit.

2. The thrombus gun of claim 1, wherein: a gear box (24) is fixedly arranged in the shell, and two ends of the first linkage shaft and the second linkage shaft are arranged on the gear box.

3. The thrombus gun of claim 2, wherein: still be provided with mounting panel (25) between first universal driving shaft and the second universal driving shaft, the perforation on the mounting panel is all passed to the tip of first universal driving shaft and second universal driving shaft, the main shaft of intermediate gear set up in on the mounting panel.

4. The thrombus gun of claim 1, wherein: the shell is provided with an output hole (26), the end part of the first linkage shaft penetrates through the output hole and is connected with a button (27), an elastic piece (28) is further arranged between the button and the shell, one end of the elastic piece is connected with the button, and the other end of the elastic piece is connected with the shell.

5. The thrombus gun of claim 4, wherein: the shell is provided with a containing groove (29), the output hole is positioned in the containing groove, the bottom surface of the containing groove is provided with an installation pipe (30) arranged around the output hole, and the elastic piece is a spring sleeved on the installation pipe.

6. The thrombus gun of claim 4, wherein: an annular flange (31) is arranged on the inner side face of the middle hole of the inner pipe gear, a key groove (32) with the bottom face being an inclined plane is arranged on the end face of the annular flange close to one side of the connecting key, and the end faces of the guide blocks (33) positioned on the two sides of the key groove are also inclined planes matched with the end face of the connecting key.

7. The thrombus gun of claim 1, wherein: a rack limiting shell (34) is fixedly arranged in the shell, and an inner tube rack guiding hole (35) and an outer tube rack guiding hole (36) which extend from one end of the shell to the other end of the shell are respectively arranged on the rack limiting shell.

8. The thrombus gun of claim 7, wherein: guide rails (37) are arranged on the inner side face of the inner pipe rack guide hole and the inner side face of the outer pipe rack guide hole, and guide grooves (38) matched with the guide rails are respectively arranged on the inner pipe rack and the outer pipe rack.

9. The thrombus gun of claim 7, wherein: the end part of the inner pipe rack is provided with an inner pipe connecting piece (39), the end part of the outer pipe rack is provided with an outer pipe connecting piece (40), and the inner pipe connecting piece is also provided with a handle (23).

10. The thrombus gun of claim 7, wherein: the inner side surface of the shell is provided with a sliding rail (41), and the trigger with teeth is provided with a sliding plate (42) or a sliding rod (43) matched with the sliding rail.