CN219126492U - Suturing device and suturing system - Google Patents

Abstract

The application provides a suturing device and a suturing system. The suturing device comprises a base, wherein the base is provided with a first channel and a second channel which penetrate along the length direction of the base, the end part of the base is provided with a workbench, and the workbench is provided with a concave part communicated with the first channel; a negative pressure catheter located in the first channel, the negative pressure catheter configured to grasp human tissue to be sutured to the depression; and a needle assembly located in the second channel, the needle assembly being retractable relative to the base, the needle assembly comprising a suture, a needle, a push rod disposed in the needle, and a rivet located on a side of the push rod adjacent to the table, the suture being connected to the rivet, the push rod being retractable relative to the needle, the rivet having a stowed condition inside the needle and a deployed condition outside the needle. The rivet of this application is difficult for droing to be favorable to improving the security of sewing up.

Description

Suturing device and suturing system

Technical Field

The present application relates to the field of medical devices, and in particular, to a suturing device and suturing system.

Background

Bariatric surgery has proven to be a more effective method in terms of obesity management than diet, exercise and medication. The operation type common at present comprises gastric bypass operation, sleeve-shaped gastrectomy operation, adjustable gastric band fat-reducing operation and the like.

In bariatric surgery, it is often necessary to suture human tissue. Thus, there is a need for a simple and effective means for suturing. Such a suturing device can perform tissue suturing with minimal trauma.

In the related art, one suturing means of a suturing device is to anchor a wound using a plurality of staples and then tighten the plurality of staples using a suture so as to suture the wound. Wherein the end of the staple has a helical tip that can penetrate into tissue. The above-mentioned manner easily makes the staples fall off from the suturing position, thereby being disadvantageous in improving suturing safety.

Disclosure of Invention

Based on this, the application provides a suturing device and a suturing system, which are beneficial to improving the suturing safety.

Embodiments of the first aspect of the present application provide a suturing device comprising: the base is provided with a first channel and a second channel which penetrate along the length direction of the base, the end part of the base is provided with a workbench, and the workbench is provided with a concave part communicated with the first channel; a negative pressure catheter located in the first channel, the negative pressure catheter configured to grasp human tissue to be sutured to the depression; and a needle assembly located in the second channel, the needle assembly being retractable relative to the base, the needle assembly comprising a suture, a needle, a push rod disposed in the needle, and a rivet located on a side of the push rod adjacent to the table, the suture being connected to the rivet, the push rod being retractable relative to the needle, the rivet having a stowed condition inside the needle and a deployed condition outside the needle.

The utility model provides a suturing device uses the mode of rivet drive suture, makes the suture sew up the wound, and the rivet is difficult for droing to be favorable to improving the security of sewing up. In addition, the suturing device can complete single suturing and multiple suturing, so that the suitability of the suturing device and the suturing efficiency are improved.

In some embodiments, the rivet is provided with a threading hole.

In some embodiments, one end of the suture is attached to the rivet and the other end extends out of the side of the base away from the table along the interior of the needle.

In some embodiments, the outer surface of the rivet is provided with at least one radially-contracted or tilted spring.

In some embodiments, the number of the elastic pieces is two, and the elastic pieces are uniformly arranged on the outer surface of the rivet in the circumferential direction.

In some embodiments, the end of the rivet near one end of the push rod is circumferentially and uniformly provided with a plurality of extrusion flaps which shrink close or separate along the radial direction of the rivet.

In some embodiments, the lancet comprises a needle tip and a needle cannula connected to the needle tip; one end of the workbench, which is far away from the puncture needle, is provided with a limiting hole, and the limiting hole is configured to enable the needle tip, the push rod and the rivet in a storage state to pass through, so that the needle tube does not pass through.

In some embodiments, the bottom of the recess is arcuate; the end of the negative pressure conduit, which is close to the workbench, is in an arc shape with the end part upwards.

In some embodiments, the suturing device further comprises a negative pressure source in communication with an end of the negative pressure conduit facing away from the platform.

Embodiments of the second aspect of the present application provide a suturing system comprising an endoscope and a suturing device of the first aspect.

Drawings

FIG. 1 is a schematic view of a suturing device of a suturing system of an embodiment of the present application sucking human tissue;

FIG. 2 is a schematic view of a suturing device of a suturing system of an embodiment of the present application penetrating human tissue;

FIG. 3 is a schematic view of the suturing device needle withdrawal of the suturing system of the present embodiment;

FIG. 4 is a schematic view showing a structure of a suturing device for continuously suturing human tissue according to an embodiment of the present application;

fig. 5 is a schematic view of one of the constructions of the rivet according to the embodiment of the present application.

The reference numerals are as follows:

10-suturing system;

100-suturing device;

110-a base; 111-a first channel; 112-a second channel; 113-a workbench; 1131-recesses; 1132-limiting aperture;

120-negative pressure conduit;

130-a needle assembly; 131-stitching; 132-puncture needle; 1321-needle tip; 1322-needle cannula; 133-push rod; 134-rivet; 1341-shrapnel; 1342-squeezing flaps;

200-endoscope;

a-human tissue.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1, an embodiment of a first aspect of the present application proposes a suturing device 100. Suturing device 100 includes a base 110, a negative pressure catheter 120, and a needle assembly 130. The base 110 is provided with a first channel 111 and a second channel 112 penetrating in the length direction thereof, the end of the base 110 is provided with a table 113, and the table 113 has a recess 1131 communicating with the first channel 111. A negative pressure catheter 120 is positioned in the first channel 111, the negative pressure catheter 120 being configured to grasp human tissue a to be sutured to the depression 1131. The needle assembly 130 is positioned in the second channel 112, and the needle assembly 130 is retractable relative to the base 110. As shown in fig. 2, the needle assembly 130 includes a suture 131, a puncture needle 132, a push rod 133 disposed within the puncture needle 132, and a rivet 134 located on a side of the push rod 133 adjacent to the table 113. Suture 131 is connected to rivet 134, and pusher bar 133 is retractable relative to needle 132. The rivet 134 has a housed state inside the puncture needle 132 and a deployed state outside the puncture needle 132. The storage state means that the rivet 134 can be placed inside the puncture needle 132 and can move with respect to the puncture needle 132. The unfolded state means that the rivet 134 cannot be accommodated inside the puncture needle 132, the rivet 134 is limited to the outside of the puncture needle 132, and the rivet 134 cannot pass through the puncture wound caused by the puncture needle 132. Specifically, as shown in fig. 1 and 2, the rivet 134 is in a stowed state, and as shown in fig. 3, the rivet 134 is in a deployed state.

The suturing device of the present application completes single suturing and continuous suturing of human tissue by the cooperation of the puncture needle 132, the push rod 133, the rivet 134 and the suture 131. Specifically, the single suture process is: first, as shown in fig. 1, the negative pressure catheter 120 grips the human tissue a to be sutured to the recessed portion 1131 of the table 113. The negative pressure conduit 120 sucks the distant human tissue A through the negative pressure of the port, which is beneficial to reducing the probability of secondary injury of the human tissue. Then, as shown in fig. 2, the needle assembly 130 is driven to move in a direction toward the table 113 with respect to the base 110, so that the puncture needle 132 of the needle assembly 130 punctures the human tissue a. Next, after the penetrating needle 132 of the needle assembly 130 passes through the human tissue a, the plunger 133 is driven to move relative to the penetrating needle 132 in a direction toward the table 113, so that the plunger 133 pushes the rivet 134 out of the penetrating needle 132. Thus, rivet 134 is passed through body tissue A with suture 131. Next, as shown in FIG. 3, the plunger 133 and needle 132 are actuated to retract, i.e., move in a direction away from the table 113, such that the needle 132 and plunger 133 are positioned on the side of the body tissue A facing away from the rivet 134. Since the rivet 134 is not bound by the puncture needle 132, the rivet 134 is changed from the housed state to the deployed state. The rivet 134 cannot pass through the puncture wound created by the puncture needle 132. When the suture 131 is pulled from the distal end, the rivet 134 attached to the suture 131 is tightened against the body tissue a and cannot pass through the puncture wound, that is, the rivet 134 corresponds to a dead knot at one end of the suture 131. Wherein, the distal end refers to the end of the base 110 away from the workbench 113, and the corresponding end of the base 110 close to the workbench 113 may be referred to as the proximal end, and the proximal end refers to the end of the needle assembly 130 for performing the suturing operation. Finally, the other end of the suture 131 is knotted, thus completing the single suture process.

Further, the process of continuous stitching for a plurality of times is as follows: after single suturing, the plunger 133 is removed from the puncture needle 132 at the distal end, then another rivet 134 is connected to the suture 131 and placed inside the puncture needle 132, then the plunger 133 is reinstalled, the negative pressure catheter 120 again grabs another human tissue to be sutured, and the above process is repeated, thus continuous suturing can be performed. The number of rivets 134 can be 2, 3 or more, depending on the number of stitches desired. It will be readily appreciated that the first rivet 134 is fixedly attached to the suture 131 to act as a dead knot for the suture 131, and that other rivets 134 are slidably attached to the suture 131. Thus, when the suture 131 is pulled after the suturing operation is completed, the rivets 134 are moved on the suture 131, so that the suture 131 pulls the rivets 134, and the tissue to be sutured is sutured by the suture 131 after the rivets 134 are pulled. As shown in fig. 4, a schematic diagram of two stitches is performed. Wherein, the rivet 134 at the rightmost end in the figure is fixedly connected with the suture 131, and the other rivet 134 is slidably connected with the suture 131.

As can be seen from the above, in the suturing device 100 of the present application, the rivet 134 is used to drive the suture 131, so that the suture 131 is used to suture the wound, and the rivet 134 is not easy to fall off, thereby being beneficial to improving the suturing safety. In addition, the suturing device 100 of the present application can complete both a single suturing and multiple suturing, thereby facilitating improved fit and suturing efficiency of the suturing device 100.

Further, the rivet 134 is provided with a threading hole. Thus, during continuous stitching, the subsequent rivet 134 is slidably coupled to the suture 131 through the threaded aperture. The threading holes may be rectangular, triangular, trapezoidal, irregular, etc., and are not limited in this application.

In some embodiments, as shown in FIG. 4, one end of suture 131 is attached to rivet 134 and the other end extends out of the side of base 110 facing away from table 113 along the interior of needle 132. In this embodiment, the interior of the puncture needle 132 is also a passage for the suture 131, which is advantageous in simplifying the structure of the suturing device 100. In addition, the extending path of the suture 131 and the moving path of the rivet 134 are overlapped, thereby facilitating the connection of the suture 131 and the rivet 134.

In some embodiments, as shown in FIG. 3, the outer surface of rivet 134 is provided with at least one radially-contracted or cocked tab 1341. This embodiment illustrates the specific structure of rivet 134. A spring piece 1341 is provided on the outer surface of the rivet 134. When the elastic sheet 1341 is radially contracted, the rivet 134 is received, and the rivet 134 is received in the puncture needle 132. When the elastic sheet 1341 is tilted in the radial direction, the rivet 134 is in the unfolded state, and at this time, the rivet 134 is located outside the puncture needle 132 and cannot pass through the wound caused by the puncture needle 132. When the rivet 134 is placed distally inside the needle 132, the tabs 1341 may be retracted by way of a downward force. When the push rod 133 pushes the rivet 134 out of the puncture needle 132, the elastic piece 1341 is restored to the tilted state by the elastic restoring force. The number of at least one finger elastic piece 1341 may be 1, or may be 2 or more.

Further, the rivet 134 may be made of a material harmless to the human body, such as titanium alloy.

Further, in some embodiments, as shown in fig. 3, the number of the elastic sheets 1341 is two, and the circumferential direction is uniformly arranged on the outer surface of the rivet 134. The two elastic sheets 1341 are in the best state, which is beneficial to reducing the probability of uneven stress of the rivet 134 caused by only arranging one elastic sheet 1341 when stretching the suture 131, and reducing the manufacturing cost of the rivet 134.

In some embodiments, the end of the rivet 134 near one end of the pushrod 133 is circumferentially uniformly provided with a plurality of crush lobes 1342 that contract or separate radially therealong.

This embodiment proposes another structure of the rivet 134. As shown in fig. 5, a plurality of crush lobes 1342 are provided at an end of the rivet 134 adjacent the pushrod 133. When the plurality of pressing petals 1342 are contracted and closed in the radial direction, the rivet 134 is in a housed state, and at this time, the rivet 134 can be housed inside the puncture needle 132, and the plurality of pressing petals 1342 are integrated. When the plurality of crush lobes 1342 are radially separated, i.e., in the expanded state of the rivet 134, the rivet 134 is positioned outside the needle 132 and cannot pass through the wound created by the needle 132. When the rivet 134 is placed distally within the needle 132, the plurality of crush lobes 1342 may be collapsed together by way of a downward force. The plurality of pressing flaps 1342 are restored to the separated state by the elastic restoring force when the push rod 133 pushes the rivet 134 out of the puncture needle 132. This allows the rivet 134 to be flexibly switched between the extended state and the retracted state.

In some embodiments, as shown in FIG. 2, the needle 132 includes a needle tip 1321 and a needle cannula 1322 coupled to the needle tip 1321. As shown in fig. 1, a limiting hole 1132 is provided at an end of the table 113 away from the puncture needle 132, and the limiting hole 1132 is configured to pass the needle tip 1321, the push rod 133, and the rivet 134 in the housed state, and not pass the needle tube 1322.

In this embodiment, the length of the extension of the puncture needle 132 with respect to the base 110 can be limited by providing the limiting hole 1132. Specifically, when the puncture needle 132 is extended relative to the base 110, the needle tip 1321 of the puncture needle 132 can pass through the limiting hole 1132, but the needle tube 1322 cannot pass through, so that the puncture stroke of the puncture needle 132 is controlled, and the probability of puncturing human tissue due to excessive puncture is reduced. In addition, when the puncture needle 132 is clamped in the limiting hole 1132, the push rod 133 and the rivet 134 in the accommodating state can pass through the limiting hole 1132, so that the rivet 134 can conveniently pass through the human tissue A to be sutured with the suture 131, and the suturing success rate is improved.

In some embodiments, as shown in fig. 3, the bottom of the recess 1131 is rounded. When the negative pressure catheter 120 sucks the human tissue to be sutured, the negative pressure catheter needs to extend out of the concave portion 1131, and the human tissue at a distance is pulled back to the concave portion 1131 after the human tissue is sucked. Therefore, the bottom of the concave portion 1131 is configured to have an arc shape, and when the negative pressure conduit 120 extends relative to the base 110, the end of the negative pressure conduit 120 near the table 111 moves along the arc-shaped track, so that the negative pressure conduit 120 can smoothly extend out of the concave portion 1131. That is, the bottom of the concave portion 1131 is circular-arc-shaped, so that the movement direction of the end of the negative pressure conduit 120 near the working table 111 is changed, specifically, the linear movement along the length direction of the base 110 is changed into the curved movement along the circular arc. Thus, the convenience of the negative pressure catheter 120 for sucking the human tissue is advantageously improved, and thus the suturing efficiency is advantageously improved.

Further, as shown in fig. 3, the end of the negative pressure conduit 120 near the table 113 is in an arc shape with the end facing upward. The end of the negative pressure conduit 120 near the workbench 113 is also provided with an arc shape, and the end of the negative pressure conduit 120 faces upwards, so that when the negative pressure conduit 120 stretches relative to the base 110, the convenience that the negative pressure conduit 120 stretches out of the concave portion 1131 is further improved, and further the stitching efficiency is further improved.

In some embodiments, suturing device 100 further comprises a negative pressure source in communication with an end of negative pressure conduit 120 facing away from table 113. A source of negative pressure may be disposed at the distal end of the suturing device 100. The negative pressure source is used to provide negative pressure to the negative pressure conduit 120, and may be, for example, a vacuum pump or the like.

Embodiments of the second aspect of the present application provide a suturing system 10 comprising an endoscope 200 and a suturing device 100 of the first aspect. Wherein endoscope 200 may be integrally provided with base 110. For example, a third channel (not shown) is provided in the base 110 extending along the length thereof, the endoscope 200 is mounted in the third channel, and the viewing end of the endoscope 200 is located at the proximal end of the suturing device 100. Alternatively, the endoscope 200 may be secured together with the suturing device 100 by a connector connection, which is advantageous for improving versatility of the suturing device 100. The suturing system 10 of the present application, using the suturing device 100 of the first aspect, is used to suture human tissue to be sutured, and the rivet 134 is not easy to fall off, thereby facilitating the improvement of suturing safety. In addition, the suturing device 100 can perform both a single suture and multiple sutures, thereby facilitating improved fit and suturing efficiency of the suturing system and suturing device 100.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A suturing device, comprising:

the base is provided with a first channel and a second channel which penetrate along the length direction of the base, the end part of the base is provided with a workbench, and the workbench is provided with a concave part communicated with the first channel;

a negative pressure catheter located in the first channel, the negative pressure catheter configured to grasp human tissue to be sutured to the depression; and

the suture needle assembly is located in the second channel, the suture needle assembly can stretch and retract relative to the base, the suture needle assembly comprises a suture, a puncture needle, a push rod arranged in the puncture needle and a rivet located on one side, close to the workbench, of the push rod, the suture is connected with the rivet, the push rod can stretch and retract relative to the puncture needle, and the rivet is in a storage state inside the puncture needle and a unfolding state outside the puncture needle.

2. The suturing device of claim 1, wherein the rivet has a threaded aperture disposed therein.

3. The suturing device of claim 1, wherein one end of the suture is attached to the rivet and the other end extends out of a side of the base away from the table along an interior of the needle.

4. The suturing device of claim 1, wherein the outer surface of the rivet is provided with at least one radially-contracted or cocked spring.

5. The suturing device of claim 4, wherein the number of the elastic pieces is two, and the elastic pieces are circumferentially and uniformly arranged on the outer surface of the rivet.

6. The suturing device of claim 1, wherein the end of the rivet adjacent to the end of the push rod is circumferentially and uniformly provided with a plurality of squeeze lobes which contract or separate radially therealong.

7. The suturing device of claim 1, wherein the needle comprises a needle tip and a needle cannula coupled to the needle tip;

one end of the workbench, which is far away from the puncture needle, is provided with a limiting hole, and the limiting hole is configured to enable the needle tip, the push rod and the rivet in a storage state to pass through, so that the needle tube does not pass through.

8. The suturing device of claim 1, wherein the bottom of the recess is arcuate;

the end of the negative pressure conduit, which is close to the workbench, is in an arc shape with the end part upwards.

9. The suturing device of claim 1, further comprising a source of negative pressure in communication with an end of the negative pressure conduit facing away from the table.

10. A suturing system comprising an endoscope and the suturing device of any one of claims 1-9.

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