CN114159122A

CN114159122A - Rotary propelling device

Info

Publication number: CN114159122A
Application number: CN202111461545.9A
Authority: CN
Inventors: 王泱; 杨青林; 王松林; 路正惠; 宋浩
Original assignee: Jiangsu Jintai Medical Instrument Co ltd
Current assignee: Jiangsu Jintai Medical Instrument Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-03-11
Anticipated expiration: 2041-12-02
Also published as: CN114159122B

Abstract

The invention relates to the technical field of medical instruments, in particular to a rotary propelling device. A rotary propulsion device, comprising: the clamping mechanism is provided with a first space allowing the member to be pushed to penetrate through; drive mechanism, include with the rotating assembly that fixture connects and with the power component that rotating assembly connects, rotating assembly is equipped with the permission treat the second space that the propulsion member runs through, the axis in first space and the axis collineation in second space, rotating assembly is in under power component's the drive, will the rotary power of power component output turns into the edge the linear drive power of the extending direction in first space and second space, in order to drive fixture reciprocating motion. The invention provides a rotary propelling device which is simple in structure and low in cost.

Description

Rotary propelling device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a rotary propelling device.

Background

Endovascular intervention is a widely accepted method for treating vascular diseases, and has the advantages of good effect, small wound, few complications and the like. During vascular interventions, such as thrombus treatment, a variety of medical devices may be used, such as guidewires, catheters, balloons, stents, etc. The guide wire is usually delivered to and passes through the lesion position, and then is used as a guide to push other instruments to the lesion position for treatment, so that the guide wire is an important basic step of the vascular intervention operation. However, in the thrombus intervention operation, when the thrombus blockage at the lesion position is serious, the tip end of the distal end of the guide wire is subjected to great resistance when being pushed, and the pushing direction is difficult to maintain.

Although the conventional slave controller of the catheter-guide wire cooperative operation interventional operation auxiliary system can stably convey and rotate the guide wire to pass through the diseased thrombus, the device is complex, the guide wire and the catheter need to be clamped, loosened and rotated respectively, the operation is inconvenient, and the working efficiency is influenced.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defects of complex structure and high cost of the rotary propulsion device in the prior art, so as to provide a rotary propulsion device with simple structure and low cost.

In order to solve the above technical problem, the present invention provides a rotary propulsion device, including:

the clamping mechanism is provided with a first space allowing the member to be pushed to penetrate through;

drive mechanism, include with the rotating assembly that fixture connects and with the power component that rotating assembly connects, rotating assembly is equipped with the permission treat the second space that the propulsion member runs through, the axis in first space and the axis collineation in second space, rotating assembly is in under power component's the drive, will the rotary power of power component output turns into the edge the linear drive power of the extending direction in first space and second space, in order to drive fixture reciprocating motion.

Optionally, the rotating assembly including rotate the piece and with rotate the application of force piece that the piece is connected, the symmetry is equipped with a pair of cell body on the lateral wall of rotation piece, the cell body is in a parallel with projection on the plane of the axis of first space is the slash, the slash with the contained angle of the axis of first space is the acute angle, the one end of application of force piece with the cell body butt, the other end is fixed.

Optionally, the power assembly includes a first gear connected to the rotating member, a second gear engaged with the first gear, and a power member connected to the second gear, and a third space allowing the member to be pushed to pass through is provided in the first gear.

Optionally, the clamping mechanism includes a first housing connected to the rotating assembly and a push rod slidably connected to the first housing, a first cavity allowing the push rod to enter and exit is disposed in the first housing, a clamping member is disposed in the first cavity, and the push rod enters or exits the first cavity under the action of an external force to open or close the clamping member, so that the member to be pushed penetrates through the second space and then enters or is clamped in the first space through the first cavity.

Optionally, the clamping device further comprises a second cavity which is arranged to penetrate through the first cavity, and the clamping piece is an elastic ring arranged in the second cavity.

Optionally, the clamping device further comprises a second housing, and the clamping mechanism and the driving mechanism are both arranged in the second housing.

Optionally, a guide pipe is sleeved on one end of the member to be pushed, which is exposed out of the second shell.

Optionally, one end of the conduit away from the second housing is provided with a developing structure.

Optionally, a support structure for supporting the power assembly is further provided in the second housing.

Optionally, the member to be advanced is a guidewire.

The technical scheme of the invention has the following advantages:

1. according to the rotary propelling device provided by the invention, when a to-be-propelled member encounters a blockage in the advancing process, the rotary component is driven by the power component to convert the rotary power output by the power component into linear driving forces along the extension directions of the first space and the second space so as to drive the clamping mechanism to rotate and reciprocate at the same time, so that the to-be-propelled member has better axle center stability, the head end propelling direction is not easy to deviate when the to-be-propelled member encounters resistance, the reciprocating motion enhances the capability of the to-be-propelled member to penetrate through the blockage, and the to-be-propelled member can smoothly reach a preset position.

2. The invention provides a rotary propelling device, wherein a rotary assembly comprises a rotary member and a force application member connected with the rotary member, a pair of groove bodies are symmetrically arranged on the side wall of the rotary member, the projection of the groove bodies on a plane parallel to the axis of a first space is an oblique line, the included angle between the oblique line and the axis of the first space is an acute angle, one end of the force application member is abutted against the groove bodies, the other end of the force application member is fixed, when the rotary member rotates, the force application member sequentially touches the top point of the groove bodies and is driven by a rotary force, and the groove bodies are oblique grooves, so that the acting force of the force application member generates a component force parallel to the axis of the rotary member, the rotary member moves along the axis and drives a clamping mechanism to move, when the force application member rotates to be in contact with the other groove bodies, the two groove bodies are symmetrically arranged, namely the oblique directions are the same, and apply forces in opposite directions to the rotary member, thereby drive fixture along opposite direction motion, and then realize treating the reciprocating motion of propelling part to be favorable to treating that the propelling part passes the position of being hindered smoothly.

3. The clamping mechanism comprises a first shell connected with the rotating assembly and a push rod connected with the first shell in a sliding mode, a first cavity allowing the push rod to enter and exit is formed in the first shell, a clamping piece is arranged in the first cavity, the push rod enters or exits the first cavity under the action of external force to open or close the clamping piece, the piece to be pushed penetrates through the second space and then enters the first space through the first cavity or is clamped, the piece to be pushed is guaranteed to be always clamped in the reciprocating motion process of the piece to be pushed, clamping and loosening of the piece to be pushed are achieved through a simple device, and operation is convenient.

4. According to the rotary propelling device provided by the invention, the guide pipe is sleeved on one end of the to-be-propelled member exposed out of the second shell, and the guide pipe can move along with the clamping mechanism, so that the to-be-propelled member is restrained and guided, the stability of the to-be-propelled member in the moving process is ensured, and the operation is convenient.

5. According to the rotary propelling device provided by the invention, the developing structure is arranged at one end of the catheter far away from the second shell, so that when an operation is carried out, the relative position of the catheter and the member to be propelled can be timely adjusted by observing the developing structure, the effective restraint of the catheter on the member to be propelled is realized, and the working efficiency and the success rate of the operation are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a rotary propulsion apparatus;

FIG. 2 is a schematic view of the operation of the rotary propulsion device;

description of reference numerals:

1-a member to be propelled; 2-a catheter; 3-a push rod; 4-a first housing; 5-a clamping member;

6-a rotating member; 7-a force application member; 8-a shell; 9-a first support; 10-a first gear;

11-a second support; 12-a power member; 13-a second gear; 14-a third support;

15-developing structure; 16-a trough body; 17-a blood vessel; 18-thrombosis;

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the embodiment of the rotary advancing device shown in fig. 1, the member to be advanced 1 is a guide wire for advancing the guide wire into a lesion site of a blood vessel 17, and comprises a second housing 8, a clamping mechanism and a driving mechanism, wherein the clamping mechanism and the driving mechanism are arranged in the second housing 8. The clamping mechanism and the driving mechanism are sequentially arranged along the moving direction of the guide wire.

Fixture include first casing 4 and with 4 sliding connection's of first

casing push rod

3, 3 atress one ends of push rod extend to 8 outsides of second casing, be equipped with in the first casing 4 and allow the first cavity of 3 business turn over of push rod, with first cavity link up and is provided with the second cavity, and the second cavity sets up with first cavity is perpendicular, be equipped with clamping piece 5 in the second cavity, and reserve the extension space that has clamping piece 5, clamping piece 5 is the elastic ring, for example, the silica gel ring. Under the action of external force, the push rod 3 enters or exits the first cavity to open or close the clamping part 5, so that the to-be-pushed part 1 penetrates through the second space and then enters or is clamped in the first space through the first cavity.

The driving mechanism comprises a rotating assembly connected with the first shell 4 of the clamping mechanism and a power assembly connected with the rotating assembly, the rotating assembly is provided with a second space allowing the member to be pushed 1 to penetrate through, and the axis of the first space and the axis of the second space are collinear. It is specific, rotating assembly including rotate piece 6 and with rotate the application of force piece 7 that piece 6 is connected, the symmetry is equipped with a pair of cell body 16 on the lateral wall of rotation piece 6, cell body 16 is being on a parallel with projection on the plane of the axis of first space is the slash, promptly, the relative vertical direction slope of extending direction of cell body 16 sets up, the slash with the contained angle of the axis of first space is the acute angle, the one end of application of force piece 7 with cell body 16 butt, the other end is fixed on second casing 8 inner wall, and application of force piece 7 is "T" font, and the horizontal part is fixed with second casing 8 inner wall, and the most advanced butt of vertical portion is in cell body 16. When rotating piece 6 is in when rotating under power component's the drive, application of force piece 7 contacts in proper order the summit of a pair of cell body 16 will the rotary power of power component output turns into the edge the linear drive power of the extending direction in first space and second space, in order to drive fixture reciprocating motion. The power assembly comprises a first gear 10 connected with the rotating part 6, a second gear 13 connected with the first gear 10 in a meshed mode, and a power part 12 connected with the second gear 13, wherein the power part 12 is a motor and used for transmitting power, and a third space allowing the part to be pushed 1 to penetrate is arranged in the first gear 10, so that the part to be pushed 1 can conveniently reciprocate.

In order to facilitate the installation of the power assembly, a support structure for supporting the power assembly is further provided in the second housing 8. In particular, the support structure comprises a first support 9 and a second support 11 providing rotational support for the first gear 10, and a third support 14 providing rotational support for the second gear 13.

Treat that propulsion member 1 exposes one of second casing 8 is served and is equipped with pipe 2 for guide and restraint treat propulsion member 1 in propulsion process, pipe 2 is kept away from the one end of second casing 8 is equipped with development structure 15, and development structure 15 is the development ring, through observing development structure 15, can in time adjust pipe 2 with treat that propulsion member 1 keeps away from the relative position of second casing 8 one end realizes that pipe 2 treats the guide and the restraint of propulsion member 1.

When the rotary pushing device is used, as shown in fig. 2, the push rod 3 is pushed into the first cavity to open the clamping member 5, then the member 1 to be pushed penetrates into the whole second housing 8 from the third space, and the relative position of the conduit 2 and one end of the member 1 to be pushed away from the second housing 8 is adjusted in time by observing the developing structure 15, so that the member 1 to be pushed penetrates out of the conduit by 20.5-2 cm, the push rod 3 is pulled out, the clamping member 5 is closed, and the member 1 to be pushed is clamped. Starting power part 12, power part 12 drives first gear 10 through second gear 13 and rotates to it is rotatory to drive and rotate piece 6, and the application of force piece 7 with the cell body 16 butt that is equipped with on rotating piece 6 touches two cell bodies 16 when rotating piece 6 is rotatory in turn, thereby drives and treats that propulsion 1 is reciprocating motion around. When the member to be propelled 1 advances by 0.5-2cm, the member to be propelled 1 is kept still, the catheter 2 is conveyed forwards, the relative position of the catheter 2 and the member to be propelled 1 is adjusted again, the propelling process is repeated, and the member to be propelled 1 continuously penetrates into the thrombus 18 until the thrombus 18 is completely penetrated.

Alternatively, the rotating assembly may be a lead screw, and the motor rotates forward and backward to drive the clamping mechanism to reciprocate through the lead screw.

As an alternative embodiment, the clamping mechanism may also be a pair of clamping plates, one end of the clamping plate, which is disposed at the second housing 8, is connected through a torsion spring, the torsion spring includes a pair of clamping plates separately disposed at the ends of the clamping plates, a space for allowing the guide wire to pass through is reserved between the pair of torsion springs, the other end of the torsion spring extends to the outside of the second housing 8, and the clamping plate is operated by the outside to open or close the clamping plate, so that the guide wire slides or is fixed.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A rotary feedthrough comprising:

the clamping mechanism is provided with a first space allowing the member (1) to be pushed to penetrate through;

the driving mechanism comprises a rotating assembly connected with the clamping mechanism and a power assembly connected with the rotating assembly, wherein the rotating assembly is provided with a second space allowing the member (1) to be pushed to penetrate through, the axis of the first space and the axis of the second space are collinear, and the rotating assembly is driven by the power assembly to convert the rotating power output by the power assembly into linear driving force along the extending direction of the first space and the second space so as to drive the clamping mechanism to reciprocate.

2. The rotary propelling device according to claim 1, wherein the rotating assembly comprises a rotating part (6) and a force application part (7) connected with the rotating part (6), a pair of groove bodies (16) are symmetrically arranged on the side wall of the rotating part (6), the projection of the groove bodies (16) on a plane parallel to the axis of the first space is an oblique line, the included angle between the oblique line and the axis of the first space is an acute angle, one end of the force application part (7) is abutted to the groove bodies (16), and the other end of the force application part is fixed.

3. The rotary propulsion device according to claim 2, characterized in that the power assembly comprises a first gear wheel (10) connected to the rotating member (6), a second gear wheel (13) in meshed connection with the first gear wheel (10) and a power member (12) connected to the second gear wheel (13), a third space being provided in the first gear wheel (10) for allowing the member to be propelled (1) to pass through.

4. The rotary propulsion device according to any one of claims 1 to 3, characterized in that the clamping mechanism comprises a first housing (4) connected with the rotating assembly and a push rod (3) slidably connected with the first housing (4), a first cavity allowing the push rod (3) to enter and exit is arranged in the first housing (4), a clamping member (5) is arranged in the first cavity, and the push rod (3) enters or exits the first cavity under the action of external force to open or close the clamping member (5), so that the member to be propelled (1) penetrates through the second space and then enters or is clamped in the first space through the first cavity.

5. The rotary propulsion device according to claim 4, characterized in that it further comprises a second cavity arranged through said first cavity, said clamping element (5) being an elastic ring arranged in said second cavity.

6. The rotary propulsion device according to any one of claims 1 to 5, characterised by further comprising a second housing (8), the gripping means and the drive means being both provided in the second housing (8).

7. The rotary propulsion device according to claim 6, characterized in that the end of the member (1) to be propelled exposed on the second casing (8) is sheathed with a guide tube (2).

8. The rotary feedthrough device according to claim 7, characterized in that the end of the conduit (5) remote from the second housing (8) is provided with a development structure (15).

9. The rotary propulsion device according to claim 6, characterized in that a support structure for supporting the power assembly is also provided in the second housing (8).

10. The rotary pusher according to any one of claims 1 to 9, characterized in that the member (1) to be pushed is a guide wire.