CN211934278U

CN211934278U - Electric coagulation forceps with forceps holder closed by stretching sheath tube

Info

Publication number: CN211934278U
Application number: CN201922356706.2U
Authority: CN
Inventors: 严航; 孔凡斌; 庞秋香; 胡立峰; 李燕辉
Original assignee: Shanghai Nuoying Medical Devices Co ltd
Current assignee: Shanghai Nuoying Medical Devices Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-11-17
Anticipated expiration: 2029-12-20

Abstract

The utility model provides a flexible closed electricity of pincers congeals pincers of realization of sheath pipe, include: the handle comprises a handle shell, a clamp structure, a sheath tube and a sheath tube driving structure; when the sheath is controlled to move to a first position along a linear direction, the jaw structure is accommodated in the sheath so as to be closed, and when the sheath is controlled to move to a second position along the linear direction, the jaw structure extends out of the sheath so as to be opened; the sheath tube driving structure comprises a controlled handle connected to the handle shell, a sheath tube telescopic transmission assembly and a sheath tube resetting structure, wherein the sheath tube telescopic transmission assembly is used for transmitting the sheath tube to move from the second position to the first position when the controlled handle is controlled to rotate; the sheath tube resetting structure is used for driving the sheath tube connecting structure to drive the sheath tube to reset from the first position to the second position.

Description

Electric coagulation forceps with forceps holder closed by stretching sheath tube

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a flexible closed electricity of tong of realization forceps holder of sheath pipe.

Background

In the process of laparoscopic surgery, medical instruments such as electrocoagulation forceps can be adopted, and in the process of surgical application, the electrocoagulation forceps conduct electricity through two clamp electrodes to perform electrocoagulation hemostasis. The part in which the clamping action is effected is understood to be the clamping structure. The electrocoagulation pliers can also be provided with a handle shell suitable for hand holding, and the handle shell can also be provided with a controlled part such as a trigger, and the jaw structure can be driven to open and close by pulling the trigger.

In the related art, the opening and closing of the forceps body are usually realized by pulling the forceps body of the forceps structure to rotate through a wire. However, in this method, the wire is not rigid, and a situation that is not easy to handle is likely to occur.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sheath pipe is flexible realizes closed electricity coagulation pincers of forceps holder to solve the problem that is difficult for controlling.

According to the utility model discloses a first aspect provides a flexible closed electric coagulation pincers of realization pincers of sheath pipe, include: the handle comprises a handle shell, a clamp structure, a sheath tube and a sheath tube driving structure;

when the sheath is controlled to move to a first position along a linear direction, the jaw structure is accommodated in the sheath so as to be closed, and when the sheath is controlled to move to a second position along the linear direction, the jaw structure extends out of the sheath so as to be opened; the sheath driving structure is used for driving the sheath to move between the first position and the second position along the linear direction;

the sheath tube driving structure comprises a controlled handle connected to the handle shell, a sheath tube telescopic transmission assembly and a sheath tube resetting structure, wherein the sheath tube telescopic transmission assembly is used for transmitting the sheath tube to move from the second position to the first position when the controlled handle is controlled to rotate; the sheath tube resetting structure is used for driving the sheath tube connecting structure to drive the sheath tube to reset from the first position to the second position.

Optionally, sheath pipe reset structure includes sheath pipe reset spring, sheath pipe reset spring follows rectilinear direction's first end is connected the flexible subassembly of sheath pipe, sheath pipe reset spring follows rectilinear direction's second end with handle casing rigidity.

Optionally, the sheath telescopic transmission assembly includes an elliptical hole portion, a circular portion, and a sheath connection structure;

sheath pipe connection structure is direct or indirect connection the sheath pipe, circular portion is fixed to be located sheath pipe connection structure, oval hole portion is fixed to be located controlled handle, circular portion embedding oval hole portion, when controlled handle is controlled to take place to rotate, oval hole portion can promote circular portion is followed the rectilinear direction motion, so that sheath pipe connection structure drives the sheath pipe is followed the rectilinear direction motion.

Optionally, the electrocoagulation pliers further comprise: a cutting knife and a cutting knife driving structure;

the incision knife driving structure is used for driving the incision knife to do cutting motion along a linear direction, and the position of the incision knife is matched with the jaw structure, so that: the cutting knife is capable of extending through the jaw structure when the cutting motion is performed.

Optionally, the incision knife driving structure includes an incision knife controlled portion, an incision knife telescopic transmission assembly and an incision knife base, the incision knife base is connected with the incision knife through a incision knife connecting structure, the incision knife telescopic transmission assembly is used for driving the incision knife base to move along the linear direction when the incision knife controlled portion is controlled to move along the linear direction, so as to drive the incision knife to move along the linear direction through the incision knife connecting structure.

Optionally, the direction of movement of the cutting knife controlled part and the cutting knife base along the linear direction is opposite.

Optionally, the incision knife telescopic transmission assembly comprises a first rack arranged at the controlled part of the incision knife, a telescopic transmission gear and a second rack arranged on the incision knife base, and the first rack is used for driving the second rack to drive the incision knife base to move along the linear direction.

Optionally, the electrocoagulation pliers further comprise a rotary driving structure for driving the jaw structure to rotate.

In the electric coagulation forceps for realizing the closing of the forceps holder by stretching the sheath tube, the opening and the closing of the forceps holder can be controlled by the stretching motion of the sheath tube, wherein the forceps holder structure is contained in the sheath tube when the sheath tube is shrunk, and the closing of the forceps holder structure can be realized; when the sheath tube extends out, the clamp structure extends out of the sheath tube, and the clamp structure can be opened. The utility model discloses in, only need the linear motion of control sheath pipe can realize that the forceps holder is closed and open, for the mode of control wire rod, it is simple relatively that it controls the process, and controls the stability preferred.

Drawings

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

FIG. 1 is a schematic diagram of a partial structure of an electrocoagulation pliers with a telescopic sheath tube for closing the pliers jaws according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a partial structure of an electrocoagulation pliers with a sheath tube stretching to close the pliers jaws according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an electrocoagulation pliers with a sheath tube stretching to close the jaws in an embodiment of the present invention.

Description of reference numerals:

1-rotation controlled;

11-a second circular portion;

2-a rotation transmission assembly;

21-a drive gear;

22-a rotary drive gear;

23-a driven gear;

24-a rotating base;

25-axial connection structure;

3-a cutting knife driving structure;

31-a controlled part of the incision knife;

32-telescopic transmission gear;

33-a base of the incision knife;

34-a cutting knife connecting structure;

35-a cutter spring;

36-a slitting knife slide rail;

4-sheath drive structure;

41-a controlled handle;

42-a circular portion;

43-elliptical hole section;

44-sheath connection structure;

45-sheath return spring;

5-a handle housing;

6-a jaw structure;

61-a first caliper body;

62-a second clamp body;

7-cutting open;

8-sheath tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

FIG. 1 is a schematic diagram of a partial structure of an electrocoagulation pliers with a telescopic sheath tube for closing the pliers jaws according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a partial structure of an electrocoagulation pliers with a sheath tube stretching to close the pliers jaws according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of an electrocoagulation pliers with a sheath tube stretching to close the jaws in an embodiment of the present invention.

The electrocoagulation pliers capable of achieving jaw closing through sheath tube stretching comprises a sheath tube 8, in the embodiment, when the sheath tube 8 is controlled to move to a first position along a linear direction, the jaw structure 6 is contained in the sheath tube 8 so that the jaw structure 6 is closed, and when the sheath tube 8 is controlled to move to a second position along the linear direction, the jaw structure 6 extends out of the sheath tube 8 so that the jaw structure 6 is opened.

The electric coagulation forceps for realizing the forceps holder closing by the sheath tube stretching can also comprise a sheath tube driving structure 4.

The sheath driving structure 4 is understood to be used for driving the sheath 8 to move between the first position and the second position along the linear direction. Sheath pipe drive structure 4 can include connect in the outer controlled handle 41 of handle casing 5 to and the flexible transmission assembly of sheath pipe, the flexible transmission assembly of sheath pipe is used for when the controlled handle 41 controlled motion, the transmission the sheath pipe is in move between first position and second position.

The controlled motion of the controlled handle 41 may be a rotational motion, and correspondingly, the motion of the sheath 8 is a linear motion, and further, the present embodiment may adopt any structural form to realize the conversion between the rotational motion and the linear motion. For example, it can be realized by means of a gear and a rack.

In one example, the sheath telescoping transmission assembly includes an elliptical aperture portion 43, a circular portion 42, and a sheath connection structure 44.

Sheath pipe connection structure 44 directly or indirectly connects sheath pipe 8, circular portion 42 is fixed to be located sheath pipe connection structure 44, oval hole portion 43 is fixed to be located controlled handle 41, circular portion 42 embedding oval hole portion 43, when controlled handle 41 is controlled to take place to rotate, oval hole portion 43 can promote circular portion 42 is followed rectilinear direction motion, so that sheath pipe connection structure 44 drives sheath pipe 8 is followed rectilinear direction motion.

Therefore, in the above examples, the cooperation between the elliptical hole and the circular structure can be utilized to convert the rotary motion into the linear motion within the moving range, thereby ensuring the extension and retraction of the sheath tube. In other examples, the elliptical hole portion 43 may be implemented by an arc groove, and correspondingly, the circular portion 42 may be an embedded portion capable of moving along the arc groove, and further, the rotation motion may be converted into a linear motion by the arc groove and the embedded portion.

Specifically, the sheath telescopic transmission assembly is mainly used for transmitting the sheath 8 to move from the second position to the first position when the controlled handle is controlled to rotate; the sheath tube resetting structure is used for driving the sheath tube connecting structure to drive the sheath tube to reset from the first position to the second position.

Sheath reset structure can include sheath reset spring 45, sheath reset spring 45 follows rectilinear direction's first end is connected the flexible subassembly of sheath, sheath reset spring follows rectilinear direction's second end with 5 rigidity of handle casing.

Specifically, the sheath connection structure 44 and the sheath 8 can move to the left to the first position when the controlled handle 41 rotates counterclockwise, and at this time, the sheath return spring 45 can be stretched, after the controlled handle 41 is released, the sheath connection structure 44 and the sheath 8 can be pulled to move to the right to the second position under the action of the sheath return spring 45, and meanwhile, the controlled handle 41 can rotate clockwise to return under the action of the return spring.

Through the above embodiment, the sheath tube can be driven to extend and retract, and thus the jaw structure 6 can be driven to open and close.

The electrocoagulation pliers provided by the embodiment further comprise: a cutting knife 7 and a cutting knife driving structure 3.

The knife drive 3 is understood to be a mechanism for driving the knife 7 in a linear cutting motion, the knife 7 being able to pass through the jaw mechanism 6.

The linear direction is understood to mean the direction of movement of the cutting blade 7 for performing the cutting, and may be, for example, parallel to the rotational axis of the rotary drive assembly 2.

The incision knife drive mechanism 3 can be understood as any mechanism that can be controlled to achieve the above movements. Correspondingly, the control for driving the linear motion can be the control in the linear direction, and the control stroke and the telescopic stroke can be the same or proportional.

Meanwhile, the embodiment does not exclude a non-rotary control mode, for example, the rotary motion can be converted into linear motion by combining a gear rack, so that the incision knife stretches and contracts.

In one embodiment, please refer to fig. 2 and fig. 3, the incision knife driving structure 3 includes an incision knife controlled portion 31 connected to the handle housing 5, and an incision knife telescopic transmission assembly and an incision knife base 33 disposed in the handle housing 5, the incision knife base 33 is connected to the incision knife 7 through an incision knife connecting structure 34, the incision knife telescopic transmission assembly is configured to transmit the incision knife base 33 to move along the linear direction when the incision knife controlled portion 31 is controlled to move, so as to drive the incision knife 7 to move along the linear direction through the incision knife connecting structure 34.

With the above embodiment, the expansion and contraction control of the incision knife can be realized.

In a specific implementation, the movement directions of the controlled incision knife part 31 and the incision knife base 33 along the linear direction are opposite.

In a specific example, the retractable transmission assembly of the incision knife includes a first rack disposed on the controlled portion 31 of the incision knife, a retractable transmission gear 32, and a second rack disposed on the base 33 of the incision knife, and the first rack transmits the second rack through the retractable transmission gear 32 to drive the base 33 of the incision knife to move along the linear direction.

In order to be suitable for guiding the cutting blade base 33, the cutting blade base 33 may be provided on a cutting blade slide rail 36, the cutting blade slide rail 36 is fixedly provided on the handle housing 5, and the cutting blade base 33 is movable along the cutting blade slide rail 36.

In a specific implementation process, the incision knife driving structure further comprises an incision knife spring 35, the incision knife spring 35 is arranged in the linear direction, the first end of the incision knife spring 35 is connected with the incision knife base 33, and the second end of the incision knife spring 35 is fixed relative to the handle shell 5. For example, to the above-mentioned cutting blade slide 36. The cutter spring 35 can provide an elastic restoring force for the movement of the cutter base 53.

In the specific implementation process, the telescopic transmission gear 32 is installed on a gear seat, and the gear seat is fixedly connected with the handle shell 5.

In the above embodiment, the transmission of the linear motion is realized by the rack, the gear and the rack, but in another embodiment, the first rack 51 does not need to be arranged, and correspondingly, the controlled incision knife part 31 may be, for example, a dial which can directly transmit the above-mentioned second rack through an intermediate gear.

In the above embodiments, the sheath tube and the incision knife may be independently controlled, or in a specific example, they may be simultaneously controlled.

The clamping structure 6 can be understood as any structure with two clamp bodies (i.e. a first clamp body and a second clamp body) at the ends and can be controlled to open and close.

In one embodiment, the surfaces of the first forceps body and the second forceps body clamped with each other are planes, in another embodiment, the first forceps body is provided with a first engaging tooth, the second forceps body is provided with a second engaging tooth, the first engaging tooth and the second engaging tooth may be symmetrical, and further, the tooth tip may be opposite to the tooth tip, and in yet another embodiment, the first engaging tooth may also be matched with the second engaging tooth in shape, so that: when the first pliers body and the second pliers body are closed, the first meshing teeth are matched and attached to the second meshing teeth.

By means of tooth-shaped fitting, the maximum contact area can be kept when the clamp body is clamped, and the optimal clamping and electrocoagulation effects are guaranteed.

The handle housing 5 can be understood to be any housing suitable for being held by hand. Part or all of the various transmission assemblies, structures in this embodiment may be disposed within the handle housing 5.

Referring to fig. 3, in one embodiment, the electrocoagulation pliers may further comprise a rotary drive structure for driving the jaw structure to rotate, and the rotary drive structure may comprise a rotary transmission assembly 2.

In a specific implementation process, the electrocoagulation pliers further comprise a rotation controlled member 1 positioned outside the handle shell 5, the rotation transmission assembly 2 is connected with the rotation controlled member 1, and the rotation transmission assembly 1 is further connected with the jaw structure through an axial connecting structure 25.

With respect to the rotary drive assembly 2:

the rotation transmission assembly 2 is used for transmitting the axial connecting structure 25 to rotate when the rotation controlled by the control element 1 is controlled to rotate, so as to drive the jaw structure 6 connected with the axial connecting structure 25 to rotate.

In the above embodiment, the forceps holder structure is driven to rotate freely by the rotary transmission assembly and the rotary controlled piece, so that the requirements of various surgical angles are met.

The rotation transmission assembly 2 is understood to be any structure suitable for rotating the jaw structure 6 under control, such as manipulation of rotation, which may be the same or proportional to the actual rotation angle of the jaw structure 6.

Also, this embodiment does not exclude non-rotational manipulation, e.g. linear motion may be converted into rotational motion in combination with a rack and pinion, thereby rotating the jaw structure 6. It can be seen that the movement modes of the rotation controlled element 1 may be various, for example, the rotation controlled element may be a rotation movement, and may also be a linear movement, and various movement modes such as a curve movement and an arc movement are not excluded.

In one embodiment, the rotation transmission assembly 2 includes a driving gear 21, a rotation transmission gear 22 and a driven gear 23.

The driven gear 23 is connected to the axial connecting structure 25, which may be directly connected or indirectly connected, the driving gear 21 and the rotation controlled member 1 rotate synchronously, and the driving gear 21 can drive the driven gear 23 to rotate through the rotation transmission gear 22, so as to drive the jaw structure 6 to rotate together.

In the above embodiment, the effective rotation of the jaw structure 6 is ensured by the gear transmission, and the operator can conveniently rotate and control the handle housing 5.

In the embodiment shown in fig. 3, the driving gear 21 and the driven gear 23 are distributed along the longitudinal direction of the rotation transmission gear 22. Meanwhile, the outer diameters and the sizes of the external teeth of the driving gear 21 and the driven gear 23 may be the same, and the rotations of the two may be synchronized.

In other embodiments, the outer diameters and the sizes of the external teeth of the driving gear 21 and the driven gear 23 may be different, and correspondingly, the sizes of the portion for connecting the driving gear 21 and the portion for connecting the driven gear 23 outside the rotation transmission gear 22 may be different, and further, the rotations of the two may not be synchronous.

In yet another embodiment, the driving gear 21 may also be a driving pulley, the driven gear 23 may also be a driven pulley, and further, the driving pulley and the driven pulley may be driven by a belt, and meanwhile, the diameters of the driving pulley and the driven pulley may be the same or different.

In one embodiment, the rotary transmission assembly 2 further includes a fixed base and a rotary base 24, the driven gear 23 is fixedly disposed on the outer side of the rotary base 24, the fixed base is fixedly connected to the inside of the handle housing 5, the rotary base 24 is mounted on the fixed base, and the axial connecting structure 25 is directly or indirectly connected to the rotary base 24.

In the specific implementation process, the rotation controlled element 1 comprises a first circular ring part and a second circular ring part 11, the first circular ring part is clamped on the periphery of the second circular ring part 11, and the second circular ring part 11 is directly or indirectly connected with the driving gear 21.

The first circular ring portion can be understood as a circular structure whose shape can be conveniently held by hand, and the second circular ring portion can be understood as a circular structure which is suitable for being assembled in the first circular ring portion and connected with the driving gear 21, and in addition, the first circular ring portion can be connected with the driving gear 21 through a connecting portion, and in an example, the second circular ring portion, the connecting portion and the driving gear 21 can be integrated. In addition, the central aperture of the second circular portion is accessible for the sheath connection structure 44 to pass through.

Wherein the cutting blade 7 and the jaw structure 6 may be configured to rotate in synchronism. For example: both can connect in same base member jointly, and both can with this base member synchronous revolution, and then, the rotation driving assembly accessible drive this base member is rotatory to drive incision sword 7 and jaw structure 6 synchronous revolution, simultaneously, incision sword 7 can stretch out and draw back for the base member, and then, the motion of guarantee incision sword along linear direction.

In addition, a structure for fixing and limiting a member which moves such as rotation and expansion may be provided in the handle case 5.

In summary, in the electrocoagulation forceps for realizing jaw closing by sheath tube expansion and contraction provided by the embodiment, the opening and closing of the jaws can be controlled by the expansion and contraction movement of the sheath tube, wherein when the sheath tube is contracted, the jaw structure is accommodated in the sheath tube, and the closing of the jaw structure can be realized; when the sheath tube extends out, the clamp structure extends out of the sheath tube, and the clamp structure can be opened. In this embodiment, only need the rectilinear motion of control sheath pipe can realize that the clamp closes and opens, for the mode of control wire rod, its control process is simple relatively, and controls stability preferred.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An electrocoagulation pliers capable of realizing closing of pliers jaws by stretching of a sheath tube is characterized by comprising: the handle comprises a handle shell, a clamp structure, a sheath tube and a sheath tube driving structure;

2. An electrocoagulation clamp according to claim 1, wherein the sheath return structure comprises a sheath return spring, the sheath return spring being connected to the sheath retraction assembly at a first end along the linear direction, the sheath return spring being positionally fixed with the handle housing at a second end along the linear direction.

3. An electrocoagulation clamp according to claim 1, wherein the sheath telescopic transmission assembly comprises an elliptical aperture portion, a circular portion, and a sheath connection;

4. An electrocoagulation clamp according to any one of claims 1 to 3, further comprising: a cutting knife and a cutting knife driving structure;

5. An electrocoagulation pliers according to claim 4, wherein the incision knife driving structure comprises an incision knife controlled portion, an incision knife telescopic transmission assembly and an incision knife base, the incision knife base is connected with the incision knife through a cutting knife connecting structure, and the incision knife telescopic transmission assembly is used for driving the incision knife base to move along the linear direction when the incision knife controlled portion is controlled to move along the linear direction, so as to drive the incision knife to move along the linear direction through the cutting knife connecting structure.

6. An electrocoagulation clamp according to claim 5, wherein the controlled section of the cutting blade is opposite to the direction of movement of the cutting blade base in the linear direction.

7. An electrocoagulation pliers according to claim 6, wherein the incision knife telescopic transmission assembly comprises a first rack arranged on the incision knife controlled part, a telescopic transmission gear and a second rack arranged on the incision knife base, and the first rack transmits the second rack through the telescopic transmission gear to drive the incision knife base to move along the linear direction.

8. An electrocoagulation clamp according to any one of claims 1 to 3, further comprising a rotary drive arrangement for driving rotation of the jaw arrangement.