CN213310063U - Clip applier - Google Patents

Abstract

The utility model discloses a clip applier, belonging to the technical field of medical instruments. This execute and press from both sides ware's working rod is connected at the front end of working head along first axis, the front end of working rod is provided with keeps silent, rotatory shell rotates the cover and establishes the junction at working head and working rod, and radial fixed for the working rod, it is provided with annular teeth of a cogwheel structure to encircle the working rod on the internal face of rotatory shell, a drive motor and a drive gear transmission of drive assembly are connected, a drive gear and the meshing of annular teeth of a cogwheel structure, encircle first axis synchronous revolution with drive rotatory shell and working rod, and the angle of adjusting keeping silent. The clamp applier can utilize the motor as a power source to realize automatic rotation of the rotary shell and the working head, so that automatic adjustment of the jaw angle of the clamp applier is realized, and the purpose of adjusting the release angle of the tissue clamp is further achieved.

Description

Clip applier

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a clip applier.

Background

With the rapid development of medical technology, the maturity of minimally invasive surgery is higher and higher, and the minimally invasive surgery has the advantages of small wound surface, rapid postoperative recovery and the like, so that the minimally invasive surgery is more and more applied to various treatment schemes. The hemostatic clamp is an important part in minimally invasive surgery, is mainly used for hemostasis of tissues with wound surfaces, and is divided into a titanium alloy hemostatic clamp and a polymer hemostatic clamp according to different manufacturing materials.

Clip appliers are devices that release and clamp tissue clips, and are classified as single-hair clip appliers and multiple-hair clip appliers depending on whether multiple loading of the hemostatic clip appliers is required. The existing clip applier generally comprises a handle, a working head and a working rod, wherein a rotating mechanism is arranged at the joint of the working head and the working rod, and the working rod can be rotated by driving the rotating mechanism to rotate, so that the purpose of adjusting the jaw angle of the clip applier is achieved. In the prior art, the rotating mechanism is generally driven manually to rotate, so that the degree of automation is low, the operation is troublesome, and the adjustment precision is difficult to control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a execute the clamp, this execute the angle of clamp keeping silent easily adjusts, adjusts process automation degree height, easy operation.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a clip applier, includes working head and work bar, the work bar is connected along first axis the front end of working head, the front end of work bar is provided with keeps silent, still includes:

the rotary shell is rotatably sleeved at the joint of the working head and the working rod and is fixed relative to the radial direction of the working rod, and an annular gear tooth structure is arranged on the inner wall surface of the rotary shell and surrounds the working rod;

the first driving assembly comprises a first driving motor and a first driving gear, the first driving motor is in transmission connection with the first driving gear, the first driving gear is meshed with the annular gear tooth structure to drive the rotating shell and the working rod to encircle the first axis synchronous rotation and adjust the angle of the jaw.

Preferably, an annular cavity is arranged inside the rotary housing, the annular cavity is arranged around the first axis, the annular cavity comprises a first annular inner wall surface and a second annular inner wall surface which are arranged in a nested manner, the first driving gear is arranged in the annular cavity, and the annular gear tooth structure is arranged on the first annular inner wall surface or the second annular inner wall surface of the annular cavity.

Preferably, the first driving gear is a straight gear, and the gear teeth on the annular gear tooth structure are straight teeth.

As preferred, the inside of rotatory shell is provided with annular ladder chamber, annular ladder chamber encircles the first axis sets up, annular ladder chamber has annular ladder face, first drive gear arranges in annular ladder intracavity, annular teeth of a cogwheel structure sets up on the annular ladder face.

Preferably, the first drive gear is a face gear.

Preferably, the clip applier further comprises:

the second driving assembly comprises a second driving motor, a second driving gear and a transmission gear, the second driving motor is in transmission connection with the second driving gear and is used for driving the second driving gear to rotate, and the second driving gear is meshed with the transmission gear;

the firing mechanism is arranged in the working head and comprises a firing screw and a thread sleeve, the firing screw is arranged along the direction of a first axis, the thread sleeve is sleeved on the firing screw and forms a screw-nut pair between the firing screw, the transmission gear is fixedly sleeved on the thread sleeve, and the firing screw can move along the direction of the first axis to drive the nail feeding mechanism.

Preferably, a motor shaft of the second driving motor is arranged along a second axis, and the second axis is arranged perpendicular to the first axis;

the second driving gear and the transmission gear are both bevel gears.

Preferably, the clip applier further comprises a button assembly configured to control rotation of said jaws a preset angle and configured to control movement of said firing screw a preset distance along said first axis.

Preferably, the button assembly includes a first button and a second button;

the first button is configured to rotate the jaw in a preset direction by a preset angle when the first button is pressed, and the first button is configured to continuously rotate the jaw in the preset direction when the first button is pressed for a long time;

the second button is configured to move the firing screw a preset distance along the first axis when clicked.

Preferably, the first driving motor and the second driving motor are both servo motors.

The utility model has the advantages that:

the utility model provides a execute and press from both sides ware, should execute and press from both sides the ware and include the working head, the working rod, rotatory shell and first drive assembly, the front end at the working head is connected along the primary axis to the working rod, the front end of working rod is provided with keeps silent, rotatory shell rotates the cover and establishes the junction at working head and working rod, and radial fixed for the working rod, it is provided with annular teeth of a cogwheel structure to encircle the working rod on the internal face of rotatory shell, first drive assembly includes a driving motor and a drive gear, a driving motor is connected with a drive gear transmission, a drive gear meshes with annular teeth of a cogwheel structure, encircle primary axis synchronous revolution with the working rod with the rotatory shell of drive, and the angle of keeping silent is adjusted. The clamp applier can utilize the motor as a power source to realize automatic rotation of the rotary shell and the working head, so that automatic adjustment of the jaw angle of the clamp applier is realized, and the purpose of adjusting the release angle of the tissue clamp is further achieved.

Drawings

Fig. 1 is a cross-sectional view of an annular tooth structure of a clip applier provided by the present invention disposed on a first annular inner wall surface of an annular cavity;

fig. 2 is a cross-sectional view of the ring gear tooth structure of the clip applier provided by the present invention disposed on the second annular inner wall surface of the annular cavity;

fig. 3 is a cross-sectional view of the annular gear tooth structure of the clip applier provided by the present invention disposed on the annular step face of the annular step cavity;

fig. 4 is a cross-sectional view of the clip applier provided by the present invention with the first drive motor external;

fig. 5 is a cross-sectional view of the clip applier provided by the invention with the first drive motor disposed within the handle.

In the figure:

10. a handle; 20. a working head; 30. a working lever;

1. rotating the housing; 101. an annular gear tooth structure; 102. an annular cavity; 103. an annular stepped cavity;

2. a first drive motor;

3. a first drive gear;

4. a second drive gear;

5. a transmission gear;

6. a firing mechanism; 601. a percussion screw; 602. a threaded sleeve;

7. a button assembly; 701. a first button; 702. a second button.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to 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 or a removable 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present embodiments provide a clip applier that is capable of releasing a tissue clip to provide a hemostatic treatment to tissue within a patient in a minimally invasive procedure. As shown in fig. 1-3, the clip applier comprises a handle 10, a working head 20, a working lever 30, a rotary housing 1, and a first drive assembly. The handle 10 is vertically connected below the working head 20, and the connection mode can adopt a detachable connection mode or a fixed connection mode. The work bar 30 is attached to the front of the work head 20 along a first axis, which in this embodiment is a horizontal axis. The working rod 30 is rotatable relative to the housing of the working head 20, and the front end of the working rod 30 is provided with a jaw in which a tissue is clamped.

The rotary shell 1 is sleeved at the joint of the working head 20 and the working rod 30 and is fixedly connected with the working rod 30. The central axis of the rotary shell 1 is also the first axis, and the rotary shell 1 can rotate around the first axis under the action of external force, so as to drive the working rod 30 to rotate around the first axis, and further change the angle of the jaw at the front end of the working rod 30 and the release angle of the tissue clamp.

In order to power the rotation of the rotary housing 1 to achieve an automatic rotation of the rotary housing 1, the clip applier further comprises a first drive assembly for driving the automatic rotation of the rotary housing 1 around the first axis. Specifically, the first driving assembly includes a first driving motor 2 and a first driving gear 3, wherein, as shown in fig. 1 to fig. 3, the first driving motor 2 may be disposed in a cavity of a housing of the working head 20, a motor shaft of the first driving motor 2 is horizontally disposed and fixedly connected to the first driving gear 3, and the connection manner may be a key connection or a welding connection. Optionally, the first driving motor 2 is a servo motor, and the servo motor is easy to control and has high control precision. The inside of rotatory shell 1 is provided with the annular teeth of a cogwheel structure 101 that encircles first axis, and annular teeth of a cogwheel structure 101 includes a plurality of teeth of a cogwheel that are the annular and arrange, and the teeth of a cogwheel of first drive gear 3 meshes with the teeth of a cogwheel of annular teeth of a cogwheel structure 101 to realize the transmission and connect.

Of course, the first driving motor 2 may also be disposed outside the housing of the working head 20 as shown in fig. 4, specifically, there is an accommodating groove between the housing of the working head 20 and the rotating housing 1, the first driving motor 2 is disposed in the accommodating groove, and the motor shaft of the first driving motor 2 is horizontally disposed and fixedly connected to the first driving gear 3.

Or first driving motor 2 also can be as shown in fig. 5, set up inside handle 10, the vertical setting of motor shaft of first driving motor 2, the central axis level of first drive gear 3 sets up, and be connected with the rotary rod along the central axis on first drive gear 3, the cover is equipped with first transmission bevel gear on the rotary rod, the cover is equipped with second transmission bevel gear on the motor shaft of first driving motor 2, second transmission bevel gear and the meshing of first transmission bevel gear, thereby realize that the transmission of first driving motor 2 and first drive gear 3 is connected.

Under the driving of the first driving motor 2, the first driving gear 3 can rotate around an axis parallel to the first axis, so as to drive the first driving gear 3 to rotate, and when the first driving gear 3 rotates, the annular gear tooth structure 101 is stressed to drive the rotating shell 1 to rotate around the first axis. When the rotating housing 1 is rotated about the first axis, the rotating housing 1 is fixedly connected to the working rod 30, so that the working rod 30 can also be rotated about the first axis, thereby changing the angle of the jaws at the front end of the working rod 30, and thus the angle of the tissue clip when released from the jaws.

Alternatively, an annular cavity 102 may be provided inside the rotating casing 1, the annular cavity 102 being arranged around the first axis, the annular cavity 102 having a first annular inner wall surface and a second annular inner wall surface which are nested, the first annular inner wall surface having a larger diameter than the second annular inner wall surface, as shown in fig. 1, the annular gear tooth structure 101 may be provided on the first annular inner wall surface, or the annular gear tooth structure 101 may be provided on the second annular inner wall surface, as shown in fig. 2. The first drive gear 3 is disposed within the annular cavity 102 and is in meshing engagement with an annular gear tooth formation 101 located on either the first or second annular inner wall surface. By providing the annular cavity 102, the rotating housing 1 can form a sleeve-shaped structure inside the annular cavity 102, and the sleeve-shaped structure can be stably sleeved on the working rod 30, so that the stability and the precision of the rotating housing 1 in the rotating process are improved. In addition, by arranging the annular cavity 102 and arranging the first driving gear 3 in the annular cavity 102, the structural compactness of the whole clip applier can be improved, and the miniaturization of the clip applier is facilitated.

Optionally, the first driving gear 3 disposed in the annular cavity 102 is a spur gear, and the gear teeth on the annular gear tooth structure 101 are straight teeth matched with the spur gear.

Of course, in addition to the annular chamber 102, it is also possible to provide an annular stepped chamber 103 inside the rotating housing 1, as shown in fig. 3, the annular stepped chamber 103 being provided around the first axis, the annular stepped chamber 103 having an annular stepped surface on which the annular gear tooth structure 101 is provided, the first drive gear 3 being disposed in the annular stepped chamber 103 and meshing with the annular gear tooth structure 101 on the annular stepped surface. Alternatively, the first driving gear 3 is a face gear, and the gear teeth on the annular gear tooth structure 101 are gear teeth matched with the face gear.

To effect release of the tissue clips, the clip applier further includes a second drive assembly, a firing mechanism 6, and a staple feed mechanism. The second driving assembly is a power source for releasing the tissue clip by the clip applier and specifically comprises a second driving motor (not shown in the figure), a second driving gear 4 and a transmission gear 5, a motor shaft of the second driving motor is connected with the second driving gear 4 so as to drive the second driving gear 4 to rotate, and the second driving gear 4 is meshed with the transmission gear 5 so as to realize transmission connection. In the present embodiment, the second driving motor is disposed in the cavity of the housing of the handle 10, and optionally, the second driving motor is a servo motor, which is easy to control and has high control precision. In the present embodiment, the motor shaft of the second drive motor is disposed along the second axis, and the second axis is disposed perpendicular to the first axis, that is, the second axis is disposed vertically. In order to realize the meshing of the second driving gear 4 and the transmission gear 5, in the present embodiment, the second driving gear 4 and the transmission gear 5 are both bevel gears.

The firing mechanism 6 is used for firing the staple feeding mechanism, and the staple feeding mechanism is used for releasing the tissue clamp from the jaws. As shown in FIGS. 1-5, the firing mechanism 6 is disposed within the housing of the working head 20 and along a first axis, and the staple feeding mechanism is disposed within the working rod 30 and along the first axis. The second driving component is a power source for moving the firing mechanism 6, and under the driving of the second driving component, the firing mechanism 6 can move forward along the first axis, so that the staple feeding mechanism positioned in front of the firing mechanism is fired, and the staple feeding mechanism can release the tissue clips positioned in the jaws.

Specifically, in this embodiment, the firing mechanism 6 includes a firing screw 601 and a threaded sleeve 602 that are nested, the firing screw 601 is disposed along a first axis, the threaded sleeve 602 is sleeved on the firing screw 601 and forms a screw nut pair with the firing screw 601, and the transmission gear 5 of the second driving assembly is sleeved on the threaded sleeve 602 and is fixedly connected with the threaded sleeve 602. That is, when the second driving motor drives the second driving gear 4 to rotate, the second driving gear 4 can drive the transmission gear 5 to rotate, so that the threaded sleeve 602 rotates synchronously with the transmission gear 5 around the first axis. When the threaded sleeve 602 rotates around the first axis, the firing screw 601 can move along the first axis under the driving of the threaded sleeve 602 to fire the staple feeding mechanism. The nail feeding mechanism is the prior art, and the specific structure thereof is not described herein.

Further, the direction in which the firing screw 601 moves is determined by the rotational direction of the threaded sleeve 602, and may be set such that the firing screw 601 moves forward along the first axis when the threaded sleeve 602 rotates clockwise, for example; as the threaded sleeve 602 rotates counterclockwise, the firing screw 601 is caused to move rearward along the first axis.

Further, in order to precisely control the rotation angle of the rotary housing 1 and thus the adjustment angle of the jaws to be changed, and to control the movement of the firing mechanism 6 along the first axis by a preset distance for precise firing of the staple feeding mechanism, the clip applier further comprises a button assembly 7, the button assembly 7 being configured to control the rotation of the jaws by the preset angle and configured to control the movement of the firing screw 601 along the first axis by the preset distance. Specifically, the button assembly 7 is electrically connected to a control mechanism for controlling the first driving motor 2 and the second driving motor, and the button assembly 7 can trigger the control mechanism, so that the first driving motor 2 and the second driving motor are powered on, and the power-on time of the first driving motor 2 and the power-on time of the second driving motor are determined by different pressing modes. In this embodiment, the control mechanism may be a centralized or distributed controller, for example, the controller may be a single-chip microcomputer or may be formed by a plurality of distributed single-chip microcomputers, and a control program may be run in the single-chip microcomputers to control the first driving motor 2 and the second driving motor to implement their functions. The control procedure is the prior art and is not described herein.

Specifically, as shown in fig. 1 to 5, in the present embodiment, the button assembly 7 includes a first button 701 and a second button 702, the first button 701 and the second button 702 are disposed on the handle 10 at an interval and protrude from the housing of the handle 10, and each of the first button 701 and the second button 702 has two pressing modes of a click and a long press.

If the first button 701 is clicked, the control mechanism controls the first driving motor 2 to be powered on for a first time, so that the jaws of the clip applier rotate by a first angle according to a preset direction, in this embodiment, the preset direction may be set to a clockwise direction or a counterclockwise direction in advance, and the first angle may be 5 ° or 10 °, and the like. If the first button 701 is pressed for a long time, the control mechanism controls the first drive motor 2 to be continuously powered on, so that the jaws of the clip applier are continuously rotated, and the manner of rotation can be set to be clockwise or counterclockwise in advance. When the first button 701 is released, the control mechanism controls the first drive motor 2 to be de-energized, thereby stopping the rotation of the jaws of the clip applier.

If the second button 702 is clicked, the control mechanism may control the second driving motor to be powered on for a second time and rotate the threaded sleeve 602 for a second angle, so that the firing screw 601 moves a preset distance along the first axis, thereby completing the firing of the nail feeding mechanism. Alternatively, the preset distance may be 1cm or 2cm, etc. Of course, in other embodiments, the first button 701 and the second button 702 may be triggered in other manners, so as to achieve the above functions.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. 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. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a clip applier, includes working head (20) and work lever (30), work lever (30) are connected along first axis the front end of working head (20), the front end of work lever (30) is provided with keeps silent, its characterized in that still includes:

the rotary shell (1) is rotatably sleeved at the joint of the working head (20) and the working rod (30) and is fixed relative to the radial direction of the working rod (30), and an annular gear tooth structure (101) is arranged on the inner wall surface of the rotary shell (1) in a manner of surrounding the working rod (30);

the first driving assembly comprises a first driving motor (2) and a first driving gear (3), the first driving motor (2) is in transmission connection with the first driving gear (3), the first driving gear (3) is meshed with the annular gear tooth structure (101) to drive the rotating shell (1) and the working rod (30) to encircle the first axis synchronous rotation and adjust the angle of the jaw.

2. The clip applier according to claim 1,

an annular cavity (102) is arranged inside the rotary shell (1), the annular cavity (102) is arranged around the first axis, the annular cavity (102) comprises a first annular inner wall surface and a second annular inner wall surface which are arranged in a nested mode, the first driving gear (3) is arranged in the annular cavity (102), and the annular gear tooth structure (101) is arranged on the first annular inner wall surface or the second annular inner wall surface of the annular cavity (102).

3. The clip applier according to claim 2,

the first driving gear (3) is a straight gear, and gear teeth on the annular gear tooth structure (101) are straight teeth.

4. The clip applier according to claim 1,

the inside of rotatory shell (1) is provided with annular ladder chamber (103), annular ladder chamber (103) encircle the first axis sets up, annular ladder chamber (103) have annular ladder face, first drive gear (3) are arranged in annular ladder chamber (103), annular teeth of a cogwheel structure (101) set up on the annular ladder face.

5. The clip applier according to claim 4,

the first driving gear (3) is a face gear.

6. The clip applier according to any one of claims 1-5, further comprising:

the second driving assembly comprises a second driving motor, a second driving gear (4) and a transmission gear (5), the second driving motor is in transmission connection with the second driving gear (4) and is used for driving the second driving gear (4) to rotate, and the second driving gear (4) is meshed with the transmission gear (5);

firing mechanism (6) sets up in working head (20), firing mechanism (6) are including firing screw rod (601) and thread bush (602), firing screw rod (601) are followed first axis direction sets up, thread bush (602) cover is established on firing screw rod (601), and with it is vice to form screw-nut between firing screw rod (601), the fixed cover of drive gear (5) is established on thread bush (602), firing screw rod (601) can be followed first axis direction removes to the nail feeding mechanism is sent in the firing.

7. The clip applier according to claim 6,

a motor shaft of the second driving motor is arranged along a second axis, and the second axis is perpendicular to the first axis;

the second driving gear (4) and the transmission gear (5) are both bevel gears.

8. The clip applier according to claim 6,

the clip applier further comprises a button assembly (7), said button assembly (7) being configured to control said jaw to rotate a preset angle and configured to control said firing screw (601) to move a preset distance along said first axis.

9. The clip applier according to claim 8,

the button assembly (7) comprises a first button (701) and a second button (702);

the first button (701) is configured to rotate the jaw by a preset angle according to a preset direction when the first button (701) is pressed, and the first button (701) is configured to rotate the jaw continuously according to the preset direction when the first button is pressed for a long time;

the second button (702) is configured to click the firing screw (601) a preset distance along the first axis.

10. The clip applier according to claim 9,

the first driving motor (2) and the second driving motor are both servo motors.

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