CN113171144A - Suturing device and method of use - Google Patents

Abstract

The invention relates to a suturing device and a using method thereof, relates to the technical field of surgical operations, and aims to solve the technical problems of long suturing operation time and high labor intensity of doctors in the prior art. The stitching instrument comprises a stitching instrument base body, wherein the first target body is positioned to a preset position on the second target body through negative pressure adsorption, a spiral needle feeding track used for limiting a stitching needle walking track is arranged on the stitching instrument base body, and the stitching instrument base body can pull a stitching thread to finish stitching the first target body and the second target body at one time after the stitching needle is pushed from an initial position of the spiral needle feeding track to a terminal position of the spiral needle feeding track through the spiral needle feeding track, so that the stitching speed is greatly improved, and the labor intensity of doctors is greatly reduced.

Description

Suturing device and method of use

Technical Field

The invention relates to the technical field of surgical operations, in particular to a suturing device and a using method thereof.

Background

In the conventional heart and cerebral vessel bypass surgery, suturing of a first target and a second target generally needs to be performed manually by a doctor, so that the success of the surgery depends on the surgical experience of the doctor and the suturing speed of the suturing technology; when the doctor sews, the first target body needs to be sewed on the second target body manually and by a needle, so that the labor intensity of the doctor is high, the sewing speed is low, and the operation time is long. However, for the cerebrovascular bypass surgery, the time is most precious, because if the surgery retention time is long, the brain cells are greatly damaged, although the existing vascular anastomat can promote the suture industry, the existing vascular anastomat can only be effective for the anastomosis of the vessels with larger diameter, and the coronary bypass and the vessels with cerebrovascular bypass are generally 3-5mm, so that the existing anastomat cannot perform the anastomosis.

Disclosure of Invention

The invention provides a suturing device and a using method thereof, which are used for solving the technical problems of long suturing operation time and high labor intensity of doctors in the prior art.

According to a first aspect of the present invention, there is provided a suture instrument including a suture instrument base body which positions a first object to a predetermined position on a second object by negative pressure suction, the suture instrument base body being provided with a spiral needle feed track for defining a travel track of a suture needle, the suture needle being pushed from a start position of the spiral needle feed track to a termination position of the spiral needle feed track and then being pulled to suture the first object and the second object at one time.

In one embodiment, the spiral needle inserting track comprises at least three sections of arc-shaped channels, and the at least three sections of arc-shaped channels are spirally distributed along the circumferential direction of the first target body.

In one embodiment, the adjacent arc-shaped channels correspond to the first target body and the second target body respectively, and the arc-shaped channels are matched with the initial shape of the suture needle, so that the suture needle can sequentially penetrate through the first target body and the second target body and enter another arc-shaped channel adjacent to the arc-shaped channel after extending out of any one arc-shaped channel.

In one embodiment, a first end of the stapler base is configured to contact the second target, the stapler base is provided with a through hole extending from the first end to a second end thereof, and the first end is opposite to the second end; the first target body passes through the through hole and contacts the second target body at the first end.

In one embodiment, the inlet end of each of the arcuate channels is disposed on a sidewall of the through-hole, and the outlet end of each of the arcuate channels is disposed on the second end; or

The outlet end of each arc-shaped channel is arranged on the side wall of the through hole, and the inlet end of each arc-shaped channel is arranged on the second end.

In one embodiment, the inlet end and the outlet end of each of the arcuate channels are not on the same longitudinal cross-section, and the inlet end of each of the arcuate channels and the outlet end of another arcuate channel adjacent to the arcuate channel are on the same longitudinal cross-section.

In one embodiment, the stitching instrument base body is further provided with an initial needle feeding channel, the initial needle feeding channel is connected with the starting position of the spiral needle feeding track, a stitching needle enters the starting position of the spiral needle feeding track through the initial needle feeding channel,

the starting position of the spiral needle feeding track is positioned in the tangential direction of the first arc-shaped channel, so that the suture needle can enter the arc-shaped channel along the tangential direction of the arc-shaped channel.

In one embodiment, the suture instrument base body is further provided with a needle outlet channel, the needle outlet channel is connected with the termination position of the spiral needle feeding track, and the termination position of the spiral needle feeding track is positioned in the tangential direction of the last arc-shaped channel, so that the suture needle can enter the needle outlet channel from the last arc-shaped channel.

In one embodiment, the stapler base body is further provided with a first negative pressure chamber and a second negative pressure chamber, the first negative pressure chamber being provided around a circumferential direction of the through hole to fix the first target body in the through hole at a predetermined position on the second target body by a negative pressure action; the second sub-pressure chamber is provided at the second end of the stapler base to fix a side of a second target body to facilitate suturing.

In one embodiment, the suturing device base body is further provided with a first negative pressure pipe connected with the first negative pressure chamber and a second negative pressure pipe connected with the second negative pressure chamber, and the first negative pressure pipe and the second negative pressure pipe are both connected with a vacuum source outside the suturing device base body.

In one embodiment, the stapler base body is further provided with a ball joint for rotational connection to a stapler handle.

In one embodiment, the stapler base is a split structure.

In one embodiment, the stapler base comprises a first base and a second base, the first base and the second base being integrally connected by a locking device.

According to a second aspect of the present invention, there is provided a method of using a stapler, comprising the steps of:

positioning the first target body to a predetermined position on the second target body by the negative pressure adsorption of the stapler base body;

pushing the suture needle into the initial needle inserting channel;

enabling the suture needle to extend out of the initial needle inserting channel and enter the spiral needle inserting track from the initial position of the spiral needle inserting track;

making the suture needle pass through each arc-shaped channel of the spiral needle inserting track in sequence;

the suture needle enters the needle outlet channel from the termination position of the spiral needle inlet track;

and drawing the suture line to finish the suture of the first target body and the second target body at one time along the walking track of the suture needle by drawing the suture needle after a part of the suture needle extends out of the needle outlet channel.

Compared with the prior art, the invention has the advantages that: by arranging the spiral needle inserting track, the suture needle can be pulled to finish the suture of the first target body and the second target body at one time after being pushed from the initial position of the spiral needle inserting track to the terminal position of the spiral needle inserting track, so that the suture speed is greatly improved, for example, a high-quality operation can be finished in a short time of 5 minutes, the operation time is shortened, and the operation success rate is improved; and because the doctor does not need to suture with a needle, the suture operation can be completed at one time, thereby greatly reducing the labor intensity of the doctor. And the suturing instrument of the invention can be suitable for the suturing operation of a second target body with the diameter of 3-6mm, so compared with the existing vascular anastomat, the suturing instrument of the invention has remarkable advantages in coronary bypass and cerebrovascular bypass operations.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.

FIG. 1 is an axial cross-sectional view of a stapler according to an embodiment of the invention;

FIG. 2 is a schematic view of a running track of a suture thread in an embodiment of the present invention.

Reference numerals:

100-a stapler base; 200-spiral needle inserting track; 300-a first target; 400-a second target; 500-suture needle;

210-an arcuate channel; 110-through holes; 120-initial needle insertion channel; 130-needle outlet channel; 140-a first sub-pressure chamber; 150-a second negative pressure chamber; 160-ball joint; 170-locking means; 180-a first negative pressure tube; 190-second negative pressure tube.

Detailed Description

The invention will be further explained with reference to the drawings.

According to a first aspect of the present invention, as shown in figures 1 and 2, there is provided a stapler, such as may be used in a vascular bypass procedure. Specifically, the stapler of the present invention includes a stapler base 100, and the stapler base 100 positions the first target body 300 to a predetermined position on the second target body 400 by negative pressure suction. The first target 300 may be, for example, an artificial blood vessel, and the second target 400 may be, for example, a native blood vessel having a lesion, wherein the native blood vessel may have a diameter of 3-6 mm. Therefore, the suturing device can complete the suturing of the tiny blood vessels, which cannot be completed by the existing large blood vessel anastomat, thereby meeting the clinical requirements of heart bypass and brain bypass.

Both ends of the first object 300 need to be sutured to the lesion on the second object 400, respectively, to function as an artificial blood vessel replacing the lesion. Accordingly, the axial direction of the first target body 300 is not parallel to the axial direction of the second target body 400, and the end of the first target body 300 may be vertically placed on the sidewall of the second target body 400, for example, such that the end of the first target body 300 is perpendicular to the axial direction of the second target body 400.

The suture instrument base body 100 is provided with a spiral needle feeding track 200 for defining a walking track of the suture needle 500, and the suture needle 500 for suturing can be fed in a spiral form in the circumferential direction of the first object 300 through the spiral needle feeding track 200, so that the suture thread can be pulled to complete the suturing of the first object 300 and the second object 400 at one time after the suture needle 500 is pushed from the starting position of the spiral needle feeding track 200 to the ending position of the spiral needle feeding track 200.

The suturing needle 500 shown in FIG. 1 is illustrated in the initial needle insertion channel 120 as described below. Since the initial needle insertion path 120 is tubular, the suture needle 500 is elongated in a slender shape in the initial needle insertion path 120, but since the suture needle 500 is made of memory alloy, high elastic stainless steel or other metal material having strong restorability, the suture needle 500 can be restored to its original shape after the suture needle 500 is pushed out of the initial needle insertion path 120, and the suture needle 500 is wound around the needle roller in the original state, so that the original state of the suture needle 500 may also be spiral.

Therefore, the invention adopts the principle of the spiral track, utilizes the suture needle 500 shaped in advance to travel in the spiral track, simulates the needle pitch and the stitch shape of manual suture, drives the suture line to suture the first target body 300 to the second target body 400, and can greatly improve the suture speed and reduce the labor intensity of doctors. The suturing process completely simulates the manual suturing process, so that other materials and components are not introduced, and the probability of blood vessel restenosis is reduced.

The helical needle track 200 of the present invention will be described in detail below.

The spiral needle insertion track 200 includes at least three arc-shaped channels 210, the at least three arc-shaped channels 210 are spirally distributed along the circumference of the first target 300, and each arc-shaped channel 210 is uniformly distributed along the circumference of the first target 300, so that the needle insertion of the suture needle 500 is uniform, the suture needle pitch and the suture strength can be kept consistent, and the operation success rate can be improved.

More specifically, for example, 8 arc-shaped channels 210 may be provided, and the following description will take 8 arc-shaped channels 210 as an example. It is understood that the number of the arc-shaped channels 210 can be selected according to the diameter of the second target 400, for example, the number of the arc-shaped channels 210 can be increased adaptively for the second target 400 with a larger diameter; for a second target body 400 with a smaller diameter, the number of arcuate channels 210 may be adaptively reduced, since the greater the number of arcuate channels 210, the smaller the stitch pitch of the stitch.

The adjacent arc-shaped channels 210 respectively correspond to the first target body 300 and the second target body 400. Since the suture needle 500 needs to be extended from one of the arc-shaped paths 210 and pass through the first and second targets 300 and 400, respectively, the corresponding portions between the adjacent arc-shaped paths 210 are portions of the first and second targets 300 and 400.

The arcuate channels 210 match the original shape of the needle 500, for example, the arcuate channels 210 have the same shape as a portion of the needle 500, so that the needle 500 can be extended from any one of the arcuate channels 210, and then sequentially pass through the first and second targets 300 and 400 and enter another arcuate channel 210 adjacent to the arcuate channel 210.

Since the spiral needle track 200 has a stable structure, if the shape of the suture needle 500 is ensured to be the same as the arc-shaped channel 210 in the spiral needle track 200, the suture needle 500 penetrates from the initial position to the final position along the spiral needle track 200, and completes one circle of suture action.

The stapler base 100 has a first end (lower end as viewed in fig. 1) for contacting the second object 400, and the stapler base 100 is provided with a through-hole 110 extending from the first end to a second end (upper end as viewed in fig. 1), and the first object 300 passes through the through-hole 110 and contacts the second object 400 at the first end.

Since the needle 500 enters one of the arcuate paths 210 from the inlet end thereof and protrudes from the outlet end thereof, the protruding needle 500 passes through a portion of the first and second objects 300 and 400, enters the next arcuate path 210 adjacent to the arcuate path 210 (i.e., one of the needles that is to be sewn in a simulated manual sewing operation), and repeats the above process until the needle 500 has made one turn around the circumference of the first object 300 (as shown in fig. 2, the travel path of the needle 500 is shown). Thus, the inlet end of each arcuate channel 210 is disposed on the sidewall of the through-hole 110, and the outlet end of each arcuate channel 210 is disposed on the second end. It will be appreciated that the outlet end of each arcuate channel 210 may be disposed on a side wall of the through bore 110 and the inlet end of each arcuate channel 210 may be disposed on the second end.

And because the suture needle 500 enters the next arc-shaped channel 210 from the last arc-shaped channel 210 and can correspond to one of the needles that are completed during the manual suture, when the suture needle 500 passes through each arc-shaped channel 210 respectively, the suture can be completed when the manual suture is performed, therefore, when the suture needle 500 extends out from the last arc-shaped channel 210, namely the termination position of the spiral needle feeding track 200, the suture thread can be dragged, so that the suture thread passes through the track that the suture needle 500 passes, the suture needle 500 can complete the suture action at one time, and the manual needle is not needed to penetrate and pull out one needle, thereby the suture speed is greatly improved, and the suture quality can be ensured (the suture needle distance can be controlled, the uniformity degree and the suture strength are uniform, and the blood seepage of the blood vessel can be prevented).

Further, the inlet end and the outlet end of each arc-shaped channel 210 are not located on the same longitudinal section, and the inlet end of each arc-shaped channel 210 and the outlet end of another arc-shaped channel 210 adjacent to the arc-shaped channel 210 are located on the same longitudinal section to form a spiral type needle advancing track 200 spirally advancing in the circumferential direction of the first subject 300.

The suture base body 100 is further provided with an initial needle insertion path 120, the initial needle insertion path 120 is connected to the starting position of the spiral needle insertion track 200, and the suture needle 500 is inserted into the starting position of the spiral needle insertion track 200 through the initial needle insertion path 120. The start position of the spiral needle track 200 is located at a tangential direction of the first arc-shaped path 210 so that the suture needle 500 can enter the arc-shaped path 210 along the tangential direction of the arc-shaped path 210. That is, the suture needle 500 first enters the initial needle inserting passage 120 and enters the screw-type needle inserting track 200 from the starting position of the screw-type needle inserting track 200.

In addition, the suture instrument base body 100 is provided with a needle outlet channel 130, the needle outlet channel 130 is connected with the termination position of the spiral needle feeding track 200, and the termination position of the spiral needle feeding track 200 is positioned in the tangential direction of the last arc-shaped channel 210, so that the suture needle 500 can enter the needle outlet channel 130 from the last arc-shaped channel 210.

It should be noted that only two arcuate channels 210 are shown, since fig. 1 is an axial cross-sectional view. The trajectory of the needle 500 cannot be considered from fig. 1 as entering the arcuate path 210 on the right side of fig. 1 from the initial needle insertion path 120 and then entering the needle exit path 130. It should be understood that the suture needle 500 is spirally advanced in the axial direction of the first object 300 after entering the arc-shaped path 210, so as to extend from the last arc-shaped path 210 and enter the needle-out path 130 after forming the walking path shown in fig. 2 after one turn around the circumference of the first object 300, thereby drawing the suture thread through the same walking path as the suture needle 500 to complete one turn of the suture in the circumference of the first object 300.

In some embodiments, the stapler base 100 secures the first target 300 and the second target 400 relative to each other through the negative pressure effect. Specifically, the stapler base body 100 is provided with a first negative pressure chamber 140 and a second negative pressure chamber 150, and as shown in fig. 1, the first negative pressure chamber 140 is provided around the circumferential direction of the through hole 110 to fix the first target body 300 in the through hole 110 at a predetermined position on the second target body 400 by the negative pressure action; the second negative pressure chamber 150 is provided at the second end of the stapler base body 100 to fix one side of the second target body 400 to facilitate suturing. The second negative pressure chamber 150 may extend in the axial direction of the first target 300 at the second end, i.e., be provided in the form of a trough.

Further, the suture instrument base body 100 is also provided with a first negative pressure tube 180 for connecting with the first negative pressure chamber 140 and a second negative pressure tube 190 for connecting with the second negative pressure chamber 150, and the first negative pressure tube 180 and the second negative pressure tube 190 are respectively connected with a vacuum source to respectively supply vacuum to the first negative pressure chamber 140 and the second negative pressure chamber 150. The suction is performed by the negative pressure, and the butt joint position of the first object 300 and the second object 400 can be ensured to be stable, so that the sewing effect can be ensured.

As shown in FIG. 1, the stapler base body 100 is further provided with a ball joint 160 for rotatably connecting to a stapler handle, so that the angle can be adjusted to facilitate viewing and manipulation during a surgical procedure.

The stapler base 100 is a split structure. Specifically, stapler base 100 includes a first base and a second base that are integrally connected by a locking device 1170. The locking device 170 may be, for example, a locking mechanism such as a latch, a buckle, a hinge, etc., and will not be described herein.

By providing the stapler base 100 as a split structure, it is possible to facilitate detachment of the stapler base 100 after completion of suturing one end (lower end as shown in fig. 1) of the first object 300 with the second object 400, so as to facilitate separation of the first object 300 and the second object 400. Subsequently, the stapler base 100 is combined at another target position of the second target body 400, and the above-described suturing process is continued, the suturing of the other end of the first target body 300 to the second target body 400 can be completed, and thus both ends of the first target body 300 can be sutured to the second target body 400.

In addition, the stapler base 100 may have a square or rectangular configuration, but the present invention is not limited thereto.

In conclusion, the suturing device of the present invention, through the skillful design of the spiral needle insertion track 200, the suturing needle 500 can be pulled to complete the suturing operation after the suturing needle 500 travels along the spiral needle insertion track 200 for one circle, the needle insertion operation is simple and easy, the suturing time can be greatly shortened, the suturing effect can be ensured, and the blood leakage can be reduced.

According to a second aspect of the present invention, there is provided a method of using a stapler, the method comprising the following steps.

In the first step, the first target body 300 is positioned to a predetermined position on the second target body 400 by the negative pressure suction action of the stapler base body 100. Specifically, for the first target body 300, it is necessary to position the entire circumference thereof; for the second target 400, only one side thereof needs to be positioned. The first target 300 can thus be positioned by the first sub-atmospheric chamber 140 described above, and the second target can be positioned by the second sub-atmospheric chamber 150.

In a second step, the suture needle 500 is pushed into the initial needle insertion path 120. Wherein a special needle feeding tool may be used to push the suture needle 500.

In a third step, the suture needle 500 is extended from the initial needle inserting passage 120 and enters the screw type needle inserting track 210 from the initial position of the screw type needle inserting track. Wherein, the starting position of the spiral needle track may be located at a tangential direction of one of the arc-shaped paths 210, so that the suture needle 500 may enter the spiral needle track 200 from the needle inserting path 120 along the tangential direction of the arc-shaped path 210.

Fourth, the suture needle 500 passes through each of the arc-shaped paths 210 of the screw-type needle insertion track 200 in sequence. As described above, the suture needle 500 is extended from one of the arcuate paths 210, sequentially passes through the first and second objects 300 and 400, and enters the next arcuate path 210, and the above process is repeated such that the suture needle 500 sequentially passes through each arcuate path 210 of the helical needle insertion track 200.

In the fifth step, the suture needle 500 is inserted into the needle outlet passage 130 from the end position of the screw type needle inserting track. Wherein the termination position of the spiral needle track may be located in the tangential direction of the last arc-shaped channel 210.

Sixth, a portion of the needle 500 is extended out of the needle passage 130, and suturing between the first and second objects is performed at one time by pulling the needle 500 so that the needle 500 pulls the suture along a path (shown in fig. 2) traveled by the needle 500.

And seventhly, knotting the suture lines, and cutting off redundant suture lines to finish the suture operation.

It should be noted that the terms "upper", "lower", "top" and "bottom" are used herein with respect to the positions of the suture device during operation, and are merely for convenience of description and should not be construed as limiting the present invention.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (12)

1. The stitching instrument is characterized by comprising a stitching instrument base body, wherein the stitching instrument base body positions a first target body to a preset position on a second target body through negative pressure adsorption, a spiral needle feeding track used for limiting a stitching needle walking track is arranged on the stitching instrument base body, and a stitching needle can be pulled to finish stitching the first target body and the second target body at one time after being pushed from a starting position of the spiral needle feeding track to a stopping position of the spiral needle feeding track.

2. The suturing device of claim 1, wherein the helical needle track includes at least three arcuate channels helically distributed along a circumference of the first target.

3. The suturing device of claim 2, wherein adjacent arcuate channels correspond to the first and second targets, respectively, and the arcuate channels match the initial shape of the suturing needle such that the suturing needle, when extended through either of the arcuate channels, can pass through the first and second targets in sequence and into another arcuate channel adjacent the arcuate channel.

4. The stapler of claim 2 or 3, wherein a first end of the stapler base is adapted to contact the second object, the stapler base is provided with a through hole extending from the first end to a second end thereof, and the first end is opposite to the second end; the first target body passes through the through hole and contacts the second target body at the first end.

5. The stapler of claim 4, wherein an inlet end of each of the arcuate channels is disposed on a side wall of the through bore and an outlet end of each of the arcuate channels is disposed on the second end; or

The outlet end of each arc-shaped channel is arranged on the side wall of the through hole, and the inlet end of each arc-shaped channel is arranged on the second end.

6. The stapler of claim 5, wherein the inlet end and the outlet end of each arcuate channel are not on the same longitudinal cross-section, and the inlet end of each arcuate channel and the outlet end of another arcuate channel adjacent to the arcuate channel are on the same longitudinal cross-section.

7. The suturing device according to claim 2 or 3, wherein an initial needle insertion path is further provided on the suturing device base body, the initial needle insertion path is connected to a start position of the spiral needle insertion track, the suturing needle enters the start position of the spiral needle insertion track through the initial needle insertion path,

the starting position of the spiral needle feeding track is positioned in the tangential direction of the first arc-shaped channel, so that the suture needle can enter the arc-shaped channel along the tangential direction of the arc-shaped channel.

8. The suturing device according to claim 2 or 3, wherein a needle outlet channel is further provided on the suturing device base body, the needle outlet channel is connected with a termination point of the spiral needle feeding track, and the termination point of the spiral needle feeding track is located in a tangential direction of the last arc-shaped channel, so that the suturing needle can enter the needle outlet channel from the last arc-shaped channel.

9. The stapler according to claim 4, wherein the stapler base body is further provided with a first negative pressure chamber and a second negative pressure chamber, the first negative pressure chamber being provided around a circumference of the through hole to fix the first target body in the through hole at a predetermined position on the second target body by a negative pressure action; the second negative pressure chamber is arranged at the second end of the stitching instrument base body to fix one side of a second target body so as to facilitate stitching;

the stitching instrument base body is also internally provided with a first negative pressure pipe connected with the first negative pressure chamber and a second negative pressure pipe connected with the second negative pressure chamber, and the first negative pressure pipe and the second negative pressure pipe are connected with a vacuum source outside the stitching instrument base body.

10. The stapler of any one of claims 1-3, wherein the stapler base body is further provided with a ball joint for rotational connection to a stapler handle.

11. The stapler of any one of claims 1-3, wherein the stapler base is a split structure;

the stitching instrument base body comprises a first base body and a second base body, and the first base body and the second base body are connected into a whole through a locking device.

12. Use of a stapler according to any one of claims 1-11, characterized in that it comprises the following steps:

positioning the first target body to a predetermined position on the second target body by the negative pressure adsorption of the stapler base body;

pushing the suture needle into the initial needle inserting channel;

enabling the suture needle to extend out of the initial needle inserting channel and enter the spiral needle inserting track from the initial position of the spiral needle inserting track;

making the suture needle pass through each arc-shaped channel of the spiral needle inserting track in sequence;

the suture needle enters the needle outlet channel from the termination position of the spiral needle inlet track;

and drawing the suture line to finish the suture of the first target body and the second target body at one time along the walking track of the suture needle by drawing the suture needle after a part of the suture needle extends out of the needle outlet channel.

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