CN220572221U - Endoscope lower driving needle assembly and suturing device - Google Patents

Abstract

The application provides an endoscope drives needle subassembly and suturing device under, and endoscope drives needle subassembly under includes: the device comprises a shell component, an arc suture needle, a rotating body, a driving component, a control piece, a clamping piece and a limiting piece. The control piece and the driving component are matched to control the rotating body to rotate, and the rotating body drives the clamping piece to rotate along the first direction or the second direction, so that the arc-shaped suture needle rotates for one circle relative to the shell component, and one-time needle threading and wire threading of human tissues are completed; above-mentioned structural design is reasonable, compact structure, convenient to use, through the cooperation between rotator, drive assembly, control, joint spare and the locating part, drives the arc and sews up the needle and relapse 360 rotations of many times relative housing assembly to realize the sewing up to human tissue, improved operating efficiency. In addition, the movement direction of the control member is at least partially perpendicular to the rotation direction of the rotator and the arc-shaped suture needle, so that the state of suture of the arc-shaped suture needle can be conveniently observed, and the suture control member is suitable for suture operation under a soft or hard endoscope.

Description

Endoscope lower driving needle assembly and suturing device

Technical Field

The application relates to the technical field of endoscope minimally invasive, in particular to an endoscope lower driving needle assembly and a suturing device.

Background

With the development of medical technology, endoscopic minimally invasive surgery is being used to treat more and more diseases. The endoscope minimally invasive surgery enters the human body through the natural cavity of the human body or forms a small access way from the surface of the human body to implement the surgery, and the surgery has the advantages of small wound, good treatment effect and quick postoperative recovery. Suturing is the most common problem during minimally invasive surgery. In general, a good stapling instrument needs to meet the high efficiency and safety characteristics. At present, a "C" type suture instrument is of interest for minimally invasive surgery under surgical endoscopes. The suture device is used for threading a needle through driving a C-shaped arc needle so as to realize suture. The suture device performs suture in the space required by the rotation of the arc needle, and the operation space required by the suture device is small, so the suture device is not limited by the size of the operation space; the arcuate needle performs a circular rotation within the reach of the operator to perform suturing, and the process is safe. At present, the C-shaped stitching instrument under the surgical endoscope is generally stitched through a transmission structure such as a connecting rod, a double-wheel and the like, and the stitching instrument has high price and limited popularization because the technology of the stitching instrument is protected, so that more patients are difficult to benefit from the stitching instrument. Breaks through the barriers of the prior art, and is worth exploring to use the type of the device for more needed patients. In addition, the method for suturing the wound surface of the minimally invasive surgery under the soft endoscope is more single and is mainly a metal endoscope clamp. The strength and reliability of the suture wound surface are inferior to those of surgical suture, and the application of the method is limited by the size of the wound surface and the full-layer suture. There are great operational advantages to the "C" type stapler described above, and therefore, it is worth doing to develop a "C" type stapler under a soft endoscope. Currently, there are few "C" type staplers under soft endoscopes. For the existing prior art, the early development stage is still carried out, the reliability of the stitching effect is uncertain, the structure is complex, the number of related parts is too large, and the reliability is low.

Disclosure of Invention

To achieve the above object, the present application provides an endoscope down-drive needle assembly, comprising: a housing assembly including a suture slot and an arc-shaped suture hole provided along a circumference of the suture slot, the suture slot being configured to accommodate human tissue; the arc-shaped suture needle is rotatably arranged in the arc-shaped suture hole; a rotator rotatably mounted within the housing assembly; the driving assembly is arranged in the shell assembly and is connected with the rotating body; the control piece is connected with the driving assembly, the rotation axis of the rotating body is parallel to the extending direction of at least part of the control piece, and the control piece is configured to drive the rotating body to rotate in a matched mode with the driving assembly; the clamping piece is connected with the rotating body and can interfere with the arc-shaped suture needle; the limiting piece is arranged in the shell assembly and can interfere with the arc-shaped suture needle; when the rotating body drives the clamping piece to rotate relative to the shell assembly along a first direction, the clamping piece can interfere with the arc-shaped suture needle, and the limiting piece slides relative to the arc-shaped suture needle; when the rotating body drives the clamping piece to rotate relative to the shell assembly along the second direction, the clamping piece is separated from the arc-shaped suture needle, the limiting piece can interfere with the arc-shaped suture needle, and the first direction is opposite to the second direction.

The endoscope lower driving needle assembly is characterized in that the rotating body is provided with meshing teeth, and the driving assembly is matched with the meshing teeth.

The endoscope lower driving needle assembly comprises a first gear and a first rotating wheel, wherein the first gear is fixedly connected with the first rotating wheel and is coaxial with the first rotating wheel, and the first gear is matched with the meshing teeth; the first rotating wheel is provided with a first annular groove and a second annular groove, one end of the control piece is fixed in the first annular groove, and the other end of the control piece is fixed in the second annular groove and coiled in the second annular groove.

The endoscope lower driving needle assembly comprises two second gears matched with the meshing teeth, wherein annular grooves are formed in the second gears; one end of the control member is fixed in the annular groove of one second gear, and the other end of the control member is fixed in the annular groove of the other second gear and coiled in the annular groove.

The endoscope down-drive needle assembly as described above, wherein the drive assembly comprises a pulley, and the control member is connected to the rotator after being diverted by the pulley.

An endoscopic needle down-drive assembly as described above, wherein the rotating body is a bevel gear.

The endoscope lower driving needle assembly comprises a rotating body, a first rotating wheel and a second rotating wheel, wherein the rotating body is a first rotating wheel, and a first annular groove and a second annular groove are formed in the first rotating wheel; the number of the pulleys is two; one end of the control piece is fixed in the third annular groove after passing through one pulley for steering, and the other end of the control piece is fixed in the fourth annular groove after passing through the other pulley for steering and is coiled in the fourth annular groove.

An endoscope lower drive needle assembly as described above, wherein the rotating body is provided with an arc chute wound around the rotating body, the arc chute extending from one end of the rotating body to the other end of the rotating body in an axial direction of the rotating body; the drive assembly includes: the sliding block is connected with the control piece and slidably installed in the arc-shaped chute.

An endoscopic needle down drive assembly as described above, wherein said drive assembly further comprises: the fixed shell is fixed in the shell assembly, a sliding hole is formed in the fixed shell along the length direction of the fixed shell, a part of the sliding block is positioned in the fixed shell and can slide in the fixed shell, and the other part of the sliding block penetrates through the sliding hole and is inserted into the arc-shaped sliding groove; and a spring disposed within the fixed housing and supported between the slider and the fixed housing.

An endoscopic needle down-drive assembly as described above, wherein said housing assembly comprises: a mounting shell; and the fixed pipe is fixed in the installation shell, and the rotating body is sleeved on the fixed pipe and can rotate relative to the fixed pipe.

The endoscope lower driving needle assembly comprises a fixing section and a mounting section, wherein the diameter of the mounting section is smaller than that of the fixing section, and the rotating body is fixed on the mounting section.

The endoscope lower driving needle assembly comprises the fixed tube and the adapter shaft, wherein the rotating body is rotatably arranged on the adapter shaft, and the projection of the rotating body on the tube at most covers part of the through holes of the tube.

An endoscope underdrive needle assembly as described above, wherein the side wall of the suture slot is provided with a slit disposed therearound, the slit communicating with the suture hole.

An endoscopic needle drive assembly as described above wherein said rotating body is concentric with said arcuate suture needle.

An endoscopic needle drive assembly as described above wherein the axis of rotation of said rotator is at an angle to the axis of rotation of said arcuate suture needle.

Compared with the prior art, the technical scheme has the following advantages:

an operator controls the rotating body to rotate through the cooperation of the control piece and the driving assembly, and the rotating body drives the clamping piece to rotate relative to the shell assembly along the first direction or the second direction; when the clamping piece is controlled to move along a first direction from the initial position, the clamping piece interferes with the arc-shaped suture needle, and the limiting piece slides relative to the arc-shaped suture needle, so that the clamping piece drives the arc-shaped suture needle to rotate 180 degrees relative to the shell assembly, and the arc-shaped suture needle passes through human tissues; when the clamping piece moves to the final position, the clamping piece is controlled to move along the second direction, the limiting piece is interfered with the arc-shaped suture needle, the clamping piece is separated from the arc-shaped suture needle, so that the clamping piece returns to the initial position, the operation is repeated, the arc-shaped suture needle rotates for one circle relative to the shell assembly, the arc-shaped suture needle penetrates through human tissues, and the like, and the arc-shaped suture needle rotates for one circle relative to the shell assembly for many times, so that suturing of the human tissues is completed; the structure is reasonable in design, compact in structure and convenient to use, and the arc-shaped suture needle is driven to repeatedly rotate 360 degrees relative to the shell assembly for multiple times through the cooperation among the rotating body, the driving assembly, the control piece, the clamping piece and the limiting piece, so that the suture of human tissues is realized, and the operation efficiency is improved; in addition, the movement direction of the control member is at least partially perpendicular to the rotation direction of the rotator and the arc-shaped suture needle, so that the state of suture of the arc-shaped suture needle can be conveniently observed, and the suture control member is suitable for suture operation under a soft or hard endoscope. In addition, the rotating body and the main structure have unique space position and matching relation, for example, the rotating axes of the rotating body and the arc-shaped suture needle are at least partially parallel to the pushing or pulling direction of the control piece. Based on the characteristics, the technical scheme not only can be used under a surgical endoscope, but also can be arranged on a soft endoscope for use, and has wider application scenes. In addition, the technical scheme has simple structural design and compact structure, does not relate to complex tiny precise parts, and reduces the manufacturing process.

Embodiments of the second aspect of the present application provide a suturing device, including a suture, an endoscope, and the above-described endoscope-down needle assembly, the suture being connected with an arcuate suturing needle of the endoscope-down needle assembly, the endoscope being sleeved with a fixed tube of the endoscope-down needle assembly.

Compared with the prior art, the technical scheme has the following advantages:

the technical scheme has the effect characteristics of implementation of the traditional C-shaped stitching instrument, and simultaneously has the unique advantages. The technical scheme is mainly implemented by the cooperation among the rotating body, the driving component, the control piece, the clamping piece and the limiting piece. Unlike the prior art of surgical endoscopic "C" type staplers, the rotating body itself and its primary structure have unique spatial locations and mating relationships, e.g., the axis of rotation of the rotating body and the arcuate needle is at least partially parallel to the direction in which the control member is pushed or pulled. Based on the characteristics, the technical scheme not only can be used under a surgical endoscope, but also can be arranged on a soft endoscope for use, and has wider application scenes. In addition, the technical scheme has simple structural design and compact structure, does not relate to complex tiny precise parts, and reduces the manufacturing process.

Drawings

The following drawings are only for purposes of illustration and explanation of the present application and are not intended to limit the scope of the present application. Wherein:

FIG. 1 is a simplified schematic illustration of the structure and basic principles of an endoscopic needle down-drive assembly described herein;

FIG. 2 is a schematic view of a first embodiment of an endoscopic down drive needle assembly as described herein;

FIG. 3 is a schematic cross-sectional view of the endoscopic down drive needle assembly shown in FIG. 2;

FIG. 4a is an exploded view of the endoscopic needle down-drive assembly shown in FIG. 2;

FIG. 4b is an enlarged schematic view of the portion A of FIG. 4 a;

FIG. 5 is a schematic view of the endoscopic needle down assembly of FIG. 2 in a first configuration for suturing tissue;

FIG. 6 is a partial cross-sectional structural view of the latch of FIG. 5 in a first state;

FIG. 7 is a schematic view of the endoscope lower needle assembly of FIG. 2 in a second configuration for suturing tissue;

FIG. 8 is a partial cross-sectional structural view of the latch of FIG. 7 in a second state;

FIG. 9 is a schematic view of the clip member of the endoscopic needle down assembly of FIG. 2 in a third configuration when suturing tissue;

FIG. 10 is a schematic view of the clip member of the endoscopic needle down assembly of FIG. 2 in a fourth configuration when suturing tissue;

FIG. 11 is a schematic view of the clip member of the endoscopic needle down assembly of FIG. 2 in a fifth configuration when suturing tissue;

FIG. 12 is a schematic view of the engagement of the bayonet and rotator shown in FIG. 2;

FIG. 13 is a schematic view of the drive assembly shown in FIG. 2;

FIG. 14 is a schematic cross-sectional view of a second embodiment of an endoscopic down drive needle assembly (tapered tooth drive) as described herein;

FIG. 15 is a schematic cross-sectional view of a third embodiment of an endoscopic down drive needle assembly as described herein;

FIG. 16 is a schematic view of a fourth embodiment of an endoscopic down drive needle assembly as described herein;

FIG. 17 is a schematic cross-sectional view of the endoscopic down drive needle assembly shown in FIG. 16;

FIG. 18 is an exploded view of the endoscopic down drive needle assembly shown in FIG. 16;

FIG. 19 is a schematic view of the drive assembly shown in FIG. 16;

FIG. 20 is a schematic view of a fifth embodiment of an endoscopic needle down-drive assembly as described herein;

FIG. 21 is a schematic cross-sectional view of the endoscopic down drive needle assembly shown in FIG. 20;

FIG. 22 is an exploded view of the endoscopic down drive needle assembly shown in FIG. 20;

FIG. 23 is a schematic view of a sixth embodiment of an endoscopic down drive needle assembly as described herein;

FIG. 24 is a schematic cross-sectional view of the endoscopic down drive needle assembly shown in FIG. 23;

fig. 25 is an exploded view of the endoscopic needle down-drive assembly shown in fig. 23.

Reference numerals illustrate:

10. a housing assembly; 11. a mounting shell; 111. a body; 112. a top cover; 12. a fixed tube; 121. a fixed section; 122. a mounting section; 123. a tube body; 124. a transfer shaft; 13. arc suture holes; 14. a notch; 15. avoiding the notch; 16. a suture groove; 17. an avoidance groove;

20. an arc-shaped suture needle; 21. a connection hole; 22. a clamping piece; 23. a clamping groove;

30. a rotating body; 31. meshing teeth; 32. a second wheel; 33. an arc chute;

40. a drive assembly; 41. a first gear; 42. a first wheel; 421. a first annular groove; 422. a second annular groove; 43. a second gear; 431. an annular groove; 44. a pulley; 45. a slide block; 46. a fixed case; 47. a spring;

50. a control member;

60. a clamping piece; 61. a connection housing; 62. a limit rod; 63. a support spring;

70. a limiting piece; 71. a first sheet; 72. a second sheet;

80. a fixing ring;

100. an endoscope lower drive needle assembly;

200. a suture;

300. an endoscope.

Detailed Description

The present application is further described in detail below by way of the accompanying drawings and examples. The features and advantages of the present application will become more apparent from the description.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other. The following discussion provides various embodiments of the present application. Although each embodiment represents a single combination of applications, different embodiments of the application may be substituted or combined, and therefore the application is also considered to include all possible combinations of the same and/or different embodiments described. Thus, if one embodiment comprises A, B, C and another embodiment comprises a combination of B and D, then the present application should also be considered to include embodiments comprising one or more of all other possible combinations comprising A, B, C, D, although such an embodiment may not be explicitly recited in the following. In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.

As shown in fig. 1, the endoscope lower drive needle assembly 100 mainly comprises: the suture needle comprises a shell assembly 10, an arc suture needle 20, a rotator 30, a driving assembly 40, a control piece 50 and a clamping piece 60. The diagram shows the basic principle method of implementing the technical scheme. The technical scheme can be used for a C-shaped stitching instrument under a surgical endoscope hard mirror, and at the moment, the endoscope needle driving assembly is connected with a hard short sleeve with an operating handle to form an instrument capable of being independently implemented; meanwhile, the endoscope needle driving assembly can also be installed on a long flexible soft endoscope to carry out suture operation.

As shown in fig. 1, 2 to 4b, 16 to 20, 20 to 24, and 23 to 25, an embodiment of the first aspect of the present application provides an endoscopic subneedle assembly 100 comprising: the surgical instrument comprises a housing assembly 10, an arc-shaped suture needle 20, a rotating body 30, a driving assembly 40, a control member 50, a clamping member 60 and a limiting member 70.

The housing assembly 10 includes a suture slot 16 and an arcuate suture hole 13 disposed along a circumference of the suture slot 16, the suture slot 16 being configured to receive human tissue. In one particular embodiment of the application, the housing assembly 10 includes: the housing 11 and the fixing tube 12 are installed.

The installation shell 11 is provided with a containing cavity, the installation shell 11 comprises a top plate and a bottom plate which are oppositely arranged, and a side wall plate arranged between the top plate and the bottom plate, a mounting hole for the endoscope 300 to pass through is formed in the top plate, a suture groove 16 is formed in the bottom plate, an arc-shaped suture hole 13 is formed in the circumference of the suture groove 16, an avoidance gap 15 communicated with the suture groove 16 is formed in the side wall plate, and the suture groove 16 is configured to contain human tissues. In one embodiment of the present application, the mounting housing may be a split structure, and the mounting housing 11 includes a body 111 and a top cover 112.

The fixed tube 12 is fixed in the installation housing 11, and the rotating body 30 is fitted over the fixed tube 12 and is rotatable relative to the fixed tube 12. The fixed tube 12 can be fitted over the distal end of the endoscope 300.

The arc-shaped suture needle 20 is rotatably disposed in the arc-shaped suture hole 13.

The rotator 30 is rotatably mounted within the housing assembly 10. In one embodiment of the present application, the rotator 30 is fixed to the fixed tube 12 by a fixing ring 80.

The driving assembly 40 is disposed in the housing assembly 10 and is connected to the rotating body 30.

The control member 50 is connected to the driving assembly 40, the rotation axis of the rotating body 30 is parallel to the extending direction of at least part of the control member 50, and the control member 50 is configured to cooperate with the driving assembly 40 to drive the rotating body 30 to rotate. The control member 50 may be flexible or rigid, and one skilled in the art may select the corresponding control member 50 according to particular requirements.

The clip 60 is connected to the rotating body 30 and can interfere with the arcuate suture needle 20.

A stop 70 is disposed within the housing assembly 10 and is capable of interfering with the arcuate suture needle 20.

When the rotating body 30 drives the clamping piece 60 to rotate relative to the housing assembly 10 along the first direction, the clamping piece 60 can interfere with the arc-shaped suture needle 20, and the limiting piece 70 slides relative to the arc-shaped suture needle 20; when the rotating body 30 drives the clamping piece 60 to rotate relative to the housing assembly 10 along the second direction, the clamping piece 60 is separated from the arc-shaped suture needle 20, the limiting piece 70 can interfere with the arc-shaped suture needle 20, and the first direction is opposite to the second direction.

According to the endoscope lower driving needle assembly 100 provided by the application, an operator controls the rotation of the rotating body 30 through the cooperation of the control piece 50 and the driving assembly 40, and the rotating body 30 drives the clamping piece 60 to rotate relative to the shell assembly 10 along the first direction or the second direction; when the clamping piece 60 is controlled to move from the initial position along the first direction, the clamping piece 60 interferes with the arc-shaped suture needle 20, the limiting piece 70 slides relative to the arc-shaped suture needle 20, and the clamping piece 60 drives the arc-shaped suture needle 20 to rotate 180 degrees relative to the shell assembly 10, so that the arc-shaped suture needle 20 passes through human tissues; when the clamping piece 60 moves to the final position, the clamping piece 60 is controlled to move along the second direction, the limiting piece 70 is interfered with the arc-shaped suture needle 20, the clamping piece 60 is separated from the arc-shaped suture needle 20, so that the clamping piece 60 returns to the initial position, the operation is repeated, the arc-shaped suture needle 20 rotates for one circle relative to the shell assembly 10, the arc-shaped suture needle 20 penetrates through human tissues, and the like, and the arc-shaped suture needle 20 rotates for one circle relative to the shell assembly 10 for a plurality of times, so that suturing of the human tissues is completed; the structure is simple and reasonable in design, compact in structure, free of more miniature precise parts and low in processing difficulty; the arc-shaped suture needle 20 is driven to repeatedly rotate 360 degrees relative to the shell assembly 10 through the cooperation among the rotating body 30, the driving assembly 40, the control piece 50, the clamping piece 60 and the limiting piece 70, so that the suture of human tissues is realized, the operation is simple, the restriction of a narrow operation space is avoided, the surrounding human tissues and organs are not damaged in the rotation process of the suture needle, and the operation efficiency and the safety are greatly improved.

In addition, since the rotation axes of the rotating body 30 and the arc-shaped suture needle 20 are at least partially parallel to the long flexible soft endoscope distal end longitudinal axis, the endoscope lower driving needle assembly 100 does not completely shield the working channel outlet and the light source at the front end of the endoscope, so that an operator can conveniently extend other endoscope accessories out of the working channel and perform operation, and simultaneously, the state of the arc-shaped suture needle 20 and human tissue suture can be observed in real time.

As shown in fig. 4a, 4b, 18, 22 and 25, in one embodiment of the present application, the side wall of the suture slot 16 is provided with a slit 14 disposed therearound, the slit 14 being in communication with the suture hole.

After the arc-shaped suture needle 20 rotates one circle under the action of the rotating body 30, the driving assembly 40, the control member 50, the clamping member 60 and the limiting member 70, the suture 200 connected with the arc-shaped suture needle 20 also passes through human tissues along with the rotation of the arc-shaped suture needle 20, and in the process, the suture 200 slides out of the arc-shaped suture hole 13 from the incision 14, so that the situation that the suture 200 is wound on the shell assembly 10 is avoided.

As shown in fig. 3, 14, 21 and 24, in one embodiment of the present application, the rotating body 30 is concentric with the arcuate suture needle 20.

The above structure makes the rotation angle of the rotating body 30 identical to that of the arc-shaped suture needle 20, and the rotation angle of the arc-shaped suture needle 20 can be controlled by controlling the rotation angle of the rotating body 30, so that the rotation of the rotating body 30 can be accurately transmitted to the arc-shaped suture needle 20, the arc-shaped suture needle 20 can rotate along the standard circumference, and the suture accuracy and reliability are improved.

As shown in fig. 15, in one embodiment of the present application, the axis of rotation of the rotating body 30 is at an angle to the axis of rotation of the arcuate suture needle 20.

The above structure makes the arc-shaped suture needle 20 inclined at a certain angle with respect to the rotator 30 to make the suture slot 16 match with the view field and the working duct of the endoscope, so that the arc-shaped suture needle 20 is conveniently penetrated out of the arc-shaped suture hole 13 and precisely penetrates the human tissue in the process of suturing the human tissue, and simultaneously an operator observes the suture state of the arc-shaped suture needle and the human tissue in real time through the view field of the endoscope. In this embodiment, the rotator 30 is concentric with the projection of the arcuate suture needle 20 on a plane parallel to the rotator 30; the rotation body 30 is rotated at the same angle as the arc-shaped suture needle 20 to precisely drive the rotation of the suture needle.

As shown in fig. 12, in one embodiment of the present application, the clip 60 includes: a connection housing 61, a stopper rod 62 and a support spring 63.

The connection housing 61 is fixed to the rotating body 30.

One end of the limit lever 62 is inserted into the connection housing 61, and the other end of the limit lever 62 protrudes out of the connection housing 61 and can interfere with the clamping structure on the arc-shaped suture needle 20.

The support spring 63 is supported between the stopper rod 62 and the connection housing 61. Specifically, the limit lever 62 is provided with a support table along its circumferential direction, and the support spring 63 is sleeved on the limit lever 62 and supported between the support table and the connection housing 61.

When the control clamping piece 60 moves along the first direction from the initial position, the other end of the limiting rod 62 protrudes out of the connecting shell 61 under the action of the supporting spring 63 and interferes with the clamping surface of the clamping structure, so that the clamping piece 60 drives the arc-shaped suture needle 20 to move for a certain distance relative to the shell assembly 10 in a rotating way; the locking member 60 is controlled to move in the second direction, and the limiting rod 62 compresses the supporting spring 63 along the guiding surface of the locking structure, so that the locking member 60 is separated from the locking structure, and the locking member 60 returns to the initial position. The clamping piece 60 has simple structure and easy production and manufacture, thereby reducing the production and manufacture cost of the product.

As shown in fig. 4a, 18, 22 and 25, in one embodiment of the present application, the limiting member 70 is a spring plate, and the spring plate includes a first piece 71 and a second piece 72 connected to each other, where the first piece 71 is connected to the housing assembly 10, and the second piece 72 abuts against the arcuate suture needle 20. In addition, as shown in fig. 6 and 8 to 11, the housing assembly 10 is further provided with an avoiding groove 17, and the avoiding groove 17 provides a space for deformation of the spring plate.

The control clamping piece 60 moves along the second direction, and the elastic sheet is propped against the limiting surface of the limiting structure, so that the arc-shaped suture needle 20 is prevented from retreating. When the control clamping piece 60 moves along the first direction, the elastic piece moves along the inclined plane of the limiting structure, so that the elastic piece deforms, and the elastic piece slides relative to the arc-shaped suture needle 20.

In one embodiment of the application, a first inclined surface is provided on an outer surface of an end of the side wall plate connected to the bottom plate.

When the endoscope drives the needle subassembly down and gets into narrow and small space, first inclined plane has played the guide effect to make the endoscope drive the needle subassembly down and get into narrow and small space more smoothly, thereby improved the safety in utilization and the convenience of product.

In one embodiment of the application, a second bevel is provided on the outer surface of the top plate to make the top plate in a truncated cone shape.

The structure enables the top end circle of the installation shell to be passivated, avoids the installation shell from scratching human tissues, and ensures the use safety of the product.

Several embodiments of an endoscopic needle down-drive assembly are specifically described below with reference to the accompanying drawings.

Example 1

As shown in fig. 2 to 4b, the endoscope lower driving needle assembly 100 includes: the surgical instrument comprises a housing assembly 10, an arc-shaped suture needle 20, a rotating body 30, a driving assembly 40, a control member 50, a clamping member 60 and a limiting member 70. Specifically, the control member 50 is a cable.

The housing assembly 10 includes: the housing 11 and the fixing tube 12 are installed.

The fixed tube 12 is fixed in the installation housing 11, and the rotating body 30 is fitted over the fixed tube 12 and is rotatable relative to the fixed tube 12.

The fixed tube 12 includes a tube body 123 and a connecting shaft 124, the rotating body 30 is rotatably mounted on the connecting shaft 124, and the projection of the rotating body 30 on the tube body 123 at most covers part of the through hole of the tube body 123. Specifically, the adapter shaft 124 is located on the side of the tube 123 remote from the suture slot 16. The above structure avoids the situation that the rotating body 30 sleeved on the adapter shaft 124 completely shields all the through holes, so that the endoscope 300 can observe the suture state of the arc suture needle 20 and the human tissue from the through holes, and the endoscopic surgery accessories can conveniently extend out from the working duct of the endoscope 300; in addition, the rotating body 30 is fixed on the adapter shaft 124, rather than being sleeved on the periphery of the head end of the endoscope 300, so that the overall outer diameter of the endoscope lower driving needle assembly 100 can be smaller, thereby reducing the operation space required by the endoscope lower driving needle assembly 100 and facilitating the operation.

The rotating body 30 is provided with engagement teeth 31, and the driving assembly 40 is matched with the engagement teeth 31.

The driving assembly 40 includes a first gear 41 and a first rotating wheel 42, the first gear 41 is fixedly connected with the first rotating wheel 42, and is coaxial with the first rotating wheel 42, and the first gear 41 is matched with the meshing teeth 31.

As shown in fig. 13, the first rotary wheel 42 is provided with a first annular groove 421 and a second annular groove 422, one end of the control member 50 is fixed in the first annular groove 421, and the other end of the control member 50 is fixed in the second annular groove 422 and coiled in the second annular groove 422. In one embodiment of the present application, as shown in fig. 14, the rotating body 30 is a bevel gear, that is, a bevel gear engaged between the rotating body 30 and the first gear 41.

The structure adopts a gear transmission mode, and the structure has long service life, stable work and high reliability, thereby ensuring the effective driving of the clamping piece 60 and improving the use reliability of the product.

As shown in fig. 5 to 11, the operation of the endoscope lower driving needle assembly 100 is as follows:

the operator pulls the control member 50 in the forward direction, the other end of the control member 50 is wound around the second annular groove 422, the other end of the control member 50 is wound around the first annular groove 421 to enable the first rotating wheel 42 to rotate, so that the first gear 41 is driven to rotate, the first gear 41 drives the rotating body 30 to rotate, the rotating body 30 drives the clamping piece 60 to rotate from the initial position along the first direction, the clamping piece 60 interferes with the arc-shaped suture needle 20, the limiting piece 70 slides relative to the arc-shaped suture needle 20, and the clamping piece 60 drives the arc-shaped suture needle 20 to rotate 180 degrees relative to the housing assembly 10, so that the arc-shaped suture needle 20 passes through human tissues; when the locking member 60 moves to the end position, the control member 50 is pulled in the opposite direction, one end of the control member 50 is wound around the portion of the first annular groove 421, the other end of the control member 50 is wound around the second annular groove 422, so that the first rotating wheel 42 rotates, the first gear 41 is driven to rotate, the first gear 41 drives the rotating body 30 to rotate, the rotating body 30 drives the locking member 60 to move in the second direction, the limiting member 70 interferes with the arc-shaped suture needle 20, the locking member 60 is separated from the arc-shaped suture needle 20, so that the locking member 60 returns to the initial position, the operation is repeated, the arc-shaped suture needle 20 rotates for 360 degrees relative to the housing assembly 10, so that the arc-shaped suture needle 20 passes through human tissues, and the arc-shaped suture needle 20 repeatedly rotates for 360 degrees relative to the housing assembly 10, so as to complete suturing of human tissues.

Example two

As shown in fig. 16 to 19, the endoscope lower drive needle assembly 100 includes: the surgical instrument comprises a housing assembly 10, an arc-shaped suture needle 20, a rotating body 30, a driving assembly 40, a control member 50, a clamping member 60 and a limiting member 70. Specifically, the control member 50 is a cable.

The housing assembly 10 includes: the housing 11 and the fixing tube 12 are installed.

The fixed tube 12 is fixed in the installation housing 11, and the rotating body 30 is fitted over the fixed tube 12 and is rotatable relative to the fixed tube 12. Since the front end of the fixed tube 12 is unobstructed, the rotator 30 is located outside the field of view, making the field of view of the endoscope 300 larger, so that the state of suturing the arc-shaped suturing needle 20 and human tissue can be more effectively observed by the endoscope 300 from the through hole of the fixed tube 12, and a larger operation space is provided after the endoscopic surgical accessory is extended from the working channel of the endoscope 300.

The rotating body 30 is provided with engagement teeth 31, and the driving assembly 40 is matched with the engagement teeth 31.

In one embodiment of the present application, the drive assembly 40 includes two second gears 43 that mate with the teeth 31, as shown in fig. 19, with an annular groove 431 provided on the second gears 43. Specifically, two second gears 43 are symmetrically disposed on both sides of the fixed tube 12.

One end of the control member 50 is fixed in the annular groove 431 of one second gear 43, and the other end of the control member 50 is fixed in the annular groove 431 of the other second gear 43 and is wound in the annular groove 431.

The structure adopts a gear transmission mode, and the structure has long service life, stable work and high reliability, thereby ensuring the effective driving of the clamping piece 60 and improving the use reliability of the product.

The working procedure of the endoscope lower driving needle assembly 100 is as follows:

the operator pulls the control member 50 in the forward direction, the other end of the control member 50 is wound around the portion of the other second gear 43 wound in the annular groove 431 to rotate the second gear 43, the other second gear 43 drives the rotating body 30 to rotate, the rotating body 30 drives the clamping member 60 to rotate from the initial position in the first direction, the clamping member 60 interferes with the arc-shaped suture needle 20, the limiting member 70 slides relative to the arc-shaped suture needle 20, the clamping member 60 drives the arc-shaped suture needle 20 to rotate 180 degrees relative to the housing assembly 10 to enable the arc-shaped suture needle 20 to penetrate through human tissues, in the process, the rotating body 30 drives the second gear 43 to rotate, and one end of the control member 50 is wound in the annular groove 431 of the second gear 43; when the locking element 60 moves to the end position, the control element 50 is pulled along the reverse direction, one end of the control element 50 is wound around the part in the annular groove 431 of the second gear 43, so that the second gear 43 rotates, the second gear 43 drives the rotating body 30 to rotate, the rotating body 30 drives the locking element 60 to move along the second direction, the limiting element 70 interferes with the arc-shaped suture needle 20, the locking element 60 is separated from the arc-shaped suture needle 20, the locking element 60 returns to the initial position, in the process, the rotating body 30 drives the other second gear 43 to rotate, and the other end of the control element 50 is wound around the annular groove 431 of the other second gear 43; the above operation is repeated such that the arc-shaped suture needle 20 is rotated 360 ° with respect to the housing assembly 10 to pass the arc-shaped suture needle 20 through the human tissue, and so on, such that the arc-shaped suture needle 20 is repeatedly rotated 360 ° with respect to the housing assembly 10 to complete the suturing of the human tissue.

Example III

As shown in fig. 20 to 22, the endoscope lower drive needle assembly 100 includes: the surgical instrument comprises a housing assembly 10, an arc-shaped suture needle 20, a rotating body 30, a driving assembly 40, a control member 50, a clamping member 60 and a limiting member 70. Specifically, the control member 50 is a cable.

The housing assembly 10 includes: the housing 11 and the fixing tube 12 are installed.

The fixed tube 12 is fixed in the installation housing 11, and the rotating body 30 is fitted over the fixed tube 12 and is rotatable relative to the fixed tube 12.

The fixed tube 12 includes a fixed section 121 and a mounting section 122, the diameter of the mounting section 122 is smaller than that of the fixed section 121, and the rotary body 30 is fixed to the mounting section 122. Allowing the endoscope 300 to observe the state of suturing the arc-shaped suturing needle 20 and the human tissue from the through hole of the mounting section 122; in addition, the rotator 30 is secured to the mounting section 122, reducing the space occupied by the rotator 30, resulting in a smaller size of the endoscopic needle down drive assembly 100.

The driving assembly 40 includes a pulley 44, and the control member 50 is coupled to the rotator 30 after being diverted by the pulley 44. Specifically, the number of pulleys 44 is two.

The rotating body 30 is a second rotating wheel 32, and a third annular groove and a fourth annular groove are arranged on the second rotating wheel 32.

One end of the control member 50 is fixed in the third annular groove after being turned by one pulley 44, and the other end of the control member 50 is fixed in the fourth annular groove after being turned by the other pulley 44 and is coiled in the fourth annular groove.

The structure has long service life, stable work, high reliability and simple structure, thereby ensuring the effective driving of the clamping piece 60 and improving the use reliability of the product.

The working procedure of the endoscope lower driving needle assembly 100 is as follows:

the operator pulls the control member 50 in the forward direction, the other end of the control member 50 is wound around the portion of the fourth annular groove, and one end of the control member 50 is wound around the third annular groove to enable the second rotating wheel 32 to rotate, so that the clamping member 60 is driven to rotate in the first direction from the initial position, the clamping member 60 interferes with the arc-shaped suture needle 20, the limiting member 70 slides relative to the arc-shaped suture needle 20, and the clamping member 60 drives the arc-shaped suture needle 20 to rotate 180 degrees relative to the housing assembly 10 to enable the arc-shaped suture needle 20 to penetrate through human tissues; when the locking member 60 moves to the end position, the control member 50 is pulled in the opposite direction, one end of the control member 50 is wound around the portion of the third annular groove, and the other end of the control member 50 is wound around the fourth annular groove, so that the second rotating wheel 32 rotates, the locking member 60 is driven to move in the second direction, the limiting member 70 interferes with the arc-shaped suture needle 20, the locking member 60 is separated from the arc-shaped suture needle 20, so that the locking member 60 returns to the initial position, the above operation is repeated, the arc-shaped suture needle 20 rotates for 360 degrees relative to the housing assembly 10, so that the arc-shaped suture needle 20 passes through human tissues, and the arc-shaped suture needle 20 repeatedly rotates for 360 degrees relative to the housing assembly 10, so as to complete the suturing of human tissues.

Example IV

As shown in fig. 23 to 25, the endoscope lower drive needle assembly 100 includes: the surgical instrument comprises a housing assembly 10, an arc-shaped suture needle 20, a rotating body 30, a driving assembly 40, a control member 50, a clamping member 60 and a limiting member 70. Specifically, the control member 50 is a push-pull member or a flexible cable having a certain hardness.

The housing assembly 10 includes: the housing 11 and the fixing tube 12 are installed.

The fixed tube 12 is fixed in the installation housing 11, and the rotating body 30 is fitted over the fixed tube 12 and is rotatable relative to the fixed tube 12. Since the front end of the fixed tube 12 is not shielded, the rotator 30 is located outside the field of view, so that the field of view of the endoscope 300 is larger, and the state of suturing the arc-shaped suture needle 20 and human tissue and the operation space of the endoscopic surgical accessory after the endoscopic surgical accessory is extended from the working channel of the endoscope 300 can be more effectively observed by the endoscope 300 from the through hole of the fixed tube 12.

The rotating body 30 is provided with an arc chute 33, the arc chute 33 is wound around the rotating body 30, and the arc chute 33 extends from one end of the rotating body 30 to the other end of the rotating body 30 in the axial direction of the rotating body 30.

The driving assembly 40 includes: a fixed housing 46, a slider 45 and a spring 47.

The fixing case 46 is fixed in the case assembly 10, and a sliding hole is provided on the fixing case 46 along a length direction of the fixing case 46.

The slider 45 is connected to the control member 50 and slidably mounted within the arcuate chute 33. Specifically, a portion of the slider 45 is located in the fixed housing 46 and is capable of sliding within the fixed housing 46, and another portion of the slider 45 is inserted into the arc chute 33 through the slide hole.

The spring 47 is disposed in the fixed case 46 and supported between the slider 45 and the fixed case 46.

The structure has long service life, stable work and high reliability, thereby ensuring the effective driving of the clamping piece 60 and improving the use reliability of the product.

The working procedure of the endoscope lower driving needle assembly 100 is as follows:

the operator pulls the control member 50, the control member compresses the spring 47, and at this time, the spring 47 stores the force, the control member 50 drives the sliding block 45 to slide in the arc chute 33 in the forward direction so as to enable the rotating body 30 to rotate, thereby driving the clamping member 60 to rotate in the first direction from the initial position, the clamping member 60 interferes with the arc suture needle 20, the limiting member 70 slides relative to the arc suture needle 20, and the clamping member 60 drives the arc suture needle 20 to rotate 180 degrees relative to the housing assembly 10 so as to enable the arc suture needle 20 to pass through human tissues; when the clamping piece 60 moves to the final position, the pulling force applied to the control piece 50 is removed, the control piece 50 is pushed by the elastic force of the spring 47 or simultaneously, the control piece 50 is driven to restore, the control piece 50 drives the sliding block 45 to slide in the arc chute 33 in the reverse direction, so that the rotating body 30 rotates, the clamping piece 60 is driven to move in the second direction, the limiting piece 70 interferes with the arc suture needle 20, the clamping piece 60 is separated from the arc suture needle 20, the clamping piece 60 returns to the initial position, the operation is repeated, the arc suture needle 20 rotates for one circle relative to the shell assembly 10, the arc suture needle 20 penetrates through human tissues, and the arc suture needle 20 repeatedly performs cyclic rotation motion relative to the shell assembly 10 for a plurality of times by analogy, so that suturing of human tissues is completed.

As shown in fig. 2 to 4a, 16 to 18, 20 to 22, and 23 to 25, a suturing device according to a second aspect of the present invention includes a suture thread 200, an endoscope 300, and the above-mentioned endoscopic needle-driving assembly 100, wherein the suture thread 200 is connected to the arcuate suturing needle 20 of the endoscopic needle-driving assembly 100, and the endoscope 300 is sleeved on the fixing tube 12 of the endoscopic needle-driving assembly 100.

The suturing device that this application provided, structural design is reasonable, compact structure, easy operation, convenient to use, and can realize suturing human tissue in succession, reduces the operation degree of difficulty of operation by a wide margin to the market competitiveness of product has been improved.

Based on the basic principle method of this technical solution as shown in fig. 1, four representative embodiments are presented in this application. It should be understood that various alternatives, modifications, variations, or improvements may be made by those skilled in the art based on the principles of the present technology, and such are intended to be included in this disclosure. In particular, the structures of the driving assembly and the rotating body and the cooperation relationship between the driving assembly and the rotating body, except for the four schemes proposed in the present application, all the technical schemes which can be realized in the field are included in the present disclosure. In addition, based on the principle method of the present technology, the four specific schemes and other technical schemes that can be implemented by those skilled in the art can be applied to a soft endoscopic stitching instrument, and also can be applied to a hard endoscopic stitching instrument of a surgical endoscope, and all the technical schemes should be included in the present disclosure.

In the description of the present application, it should be noted that 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.

In the description of the present application, it should be noted that the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, unless explicitly stated or limited otherwise. The term "plurality" means two or more, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The present application has been described in connection with the preferred embodiments, but these embodiments are merely exemplary and serve only as illustrations. On the basis of this, many alternatives and improvements can be made to the present application, which fall within the scope of protection of the present application.

Claims (16)

1. An endoscopic needle down-drive assembly, the endoscopic needle down-drive assembly comprising:

a housing assembly including a suture slot and an arc-shaped suture hole provided along a circumference of the suture slot, the suture slot being configured to accommodate human tissue;

the arc-shaped suture needle is rotatably arranged in the arc-shaped suture hole;

A rotator rotatably mounted within the housing assembly;

the driving assembly is arranged in the shell assembly and is connected with the rotating body;

the control piece is connected with the driving assembly, the rotation axis of the rotating body is parallel to the extending direction of at least part of the control piece, and the control piece is configured to drive the rotating body to rotate in a matched mode with the driving assembly;

the clamping piece is connected with the rotating body and can interfere with the arc-shaped suture needle; and

the limiting piece is arranged in the shell assembly and can interfere with the arc-shaped suture needle;

when the rotating body drives the clamping piece to rotate relative to the shell assembly along a first direction, the clamping piece can interfere with the arc-shaped suture needle, and the limiting piece slides relative to the arc-shaped suture needle; when the rotating body drives the clamping piece to rotate relative to the shell assembly along the second direction, the clamping piece is separated from the arc-shaped suture needle, the limiting piece can interfere with the arc-shaped suture needle, and the first direction is opposite to the second direction.

2. The endoscopic needle lower drive assembly according to claim 1, wherein,

the rotary body is provided with meshing teeth, and the driving assembly is matched with the meshing teeth.

3. The endoscopic needle lower drive assembly according to claim 2, wherein,

the driving assembly comprises a first gear and a first rotating wheel, the first gear is fixedly connected with the first rotating wheel and is coaxial with the first rotating wheel, and the first gear is matched with the meshing teeth;

the first rotating wheel is provided with a first annular groove and a second annular groove, one end of the control piece is fixed in the first annular groove, and the other end of the control piece is fixed in the second annular groove and coiled in the second annular groove.

4. The endoscopic needle lower drive assembly according to claim 2, wherein,

the driving assembly comprises two second gears matched with the meshing teeth, and annular grooves are formed in the second gears;

one end of the control member is fixed in the annular groove of one second gear, and the other end of the control member is fixed in the annular groove of the other second gear and coiled in the annular groove.

5. The endoscopic needle lower drive assembly according to claim 2, wherein,

the rotating body is a bevel gear.

6. The endoscopic needle lower drive assembly according to claim 1, wherein,

the driving assembly comprises a pulley, and the control piece is connected with the rotating body after being turned by the pulley.

7. The endoscopic needle lower drive assembly according to claim 6, wherein,

the rotating body is a second rotating wheel, and a third annular groove and a fourth annular groove are formed in the second rotating wheel;

the number of the pulleys is two;

one end of the control piece is fixed in the third annular groove after passing through one pulley for steering, and the other end of the control piece is fixed in the fourth annular groove after passing through the other pulley for steering and is coiled in the fourth annular groove.

8. The endoscopic needle lower drive assembly according to claim 1, wherein,

the rotary body is provided with an arc chute, the arc chute is coiled on the rotary body, and the arc chute extends from one end of the rotary body to the other end of the rotary body in the axial direction of the rotary body;

the drive assembly includes: the sliding block is connected with the control piece and slidably installed in the arc-shaped chute.

9. The endoscopic needle lower drive assembly according to claim 8, wherein,

the drive assembly further includes: the fixed shell is fixed in the shell assembly, a sliding hole is formed in the fixed shell along the length direction of the fixed shell, a part of the sliding block is positioned in the fixed shell and can slide in the fixed shell, and the other part of the sliding block penetrates through the sliding hole and is inserted into the arc-shaped sliding groove; and

and the spring is arranged in the fixed shell and is supported between the sliding block and the fixed shell.

10. The endoscopic needle actuation assembly according to any one of claims 1 to 9, wherein said housing assembly comprises: a mounting shell; and

the fixed pipe is fixed in the installation shell, and the rotating body is sleeved on the fixed pipe and can rotate relative to the fixed pipe.

11. The endoscopic needle lower assembly according to claim 10, wherein,

the fixed pipe comprises a fixed section and a mounting section, the diameter of the mounting section is smaller than that of the fixed section, and the rotating body is fixed on the mounting section.

12. The endoscopic needle lower assembly according to claim 10, wherein,

The fixed pipe comprises a pipe body and a switching shaft, the rotating body is rotatably arranged on the switching shaft, and the projection of the rotating body on the pipe body at most covers part of through holes of the pipe body.

13. The endoscope underdrive needle assembly of any one of claims 1-9, wherein a cutout is provided on a sidewall of the suture slot, the cutout being in communication with the suture hole.

14. The endoscopic needle lower drive assembly according to any one of claims 1 to 9, wherein said rotating body is concentric with said arcuate suture needle.

15. The endoscopic needle lower drive assembly according to any one of claims 1 to 9, wherein the rotational axis of the rotator body is at an angle to the rotational axis of the arcuate suture needle.

16. A suturing device comprising a suture, an endoscope and an endoscope needle-down assembly according to any one of claims 1 to 15, the suture being connected to an arcuate suturing needle of the endoscope needle-down assembly, the endoscope being connected to a fixed tube of the endoscope needle-down assembly.