Stapler and method of using the same

Abstract

The present invention relates to a suturing device and a method for using the same, and relates to the field of surgical technology, and is used to solve the technical problems of long suturing operation time and high labor intensity of doctors in the prior art. The suturing device of the present invention comprises a suturing device base, and the suturing device base positions a first target body to a predetermined position on a second target body through negative pressure adsorption, and a spiral needle entry track for limiting the walking track of a suturing needle is provided on the suturing device base. By providing the spiral needle entry track, the suturing needle can be pushed from the starting position of the spiral needle entry track to the ending position of the spiral needle entry track, and then the suturing thread can be pulled to complete the suturing of the first target body and the second target body at one time, so that the suturing speed is greatly improved, and the labor intensity of doctors is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical operations, and in particular to a stapler and a method for using the stapler. Background Art

[0002] In traditional heart and cerebrovascular bypass surgery, the suturing of the first target body and the second target body generally needs to be done manually by the doctor, so the success of the operation depends on the doctor's surgical experience, suturing skills and suturing speed; and because the doctor needs to sew the first target body to the second target body manually stitch by stitch, not only is the doctor's labor intensity high, but the suturing speed is slow, resulting in a long operation time. However, for cerebrovascular bypass surgery, time is the most precious, because if the operation stays for a long time, it will cause great damage to brain cells. Although the existing vascular anastomosis device can promote the suturing operation, the existing vascular anastomosis device is only effective for the anastomosis of blood vessels with larger diameters, and the blood vessels of coronary artery bypass and cerebrovascular bypass are generally 3-5mm, making it impossible for the existing anastomosis device to perform anastomosis. Summary of the invention

[0003] The invention provides a suturing device and a method for using the same, which are used to solve the technical problems in the prior art of long suturing operation time and high labor intensity of doctors.

[0004] According to the first aspect of the present invention, the present invention provides a suturing device, comprising a suturing device base, which positions a first target body at a predetermined position on a second target body through negative pressure adsorption, and a spiral needle entry track for limiting the travel trajectory of a suturing needle is provided on the suturing device base. After the suturing needle is pushed from the starting position of the spiral needle entry track to the ending position of the spiral needle entry track, the suturing thread can be pulled to complete the suturing of the first target body and the second target body at one time.

[0005] In one embodiment, the spiral needle insertion track includes at least three arc-shaped channels, and the at least three arc-shaped channels are distributed in a spiral manner along the circumference of the first target body.

[0006] In one embodiment, adjacent arc-shaped channels correspond to the first target body and the second target body respectively, and the arc-shaped channels match the initial shape of the suture needle so that after the suture needle extends from any arc-shaped channel, it can pass through the first target body and the second target body in sequence and enter another arc-shaped channel adjacent to the arc-shaped channel.

[0007] In one embodiment, the first end of the stapler base is used to contact the second target body, and the stapler base is provided with a through hole extending from its first end to the second end, 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.

[0008] In one embodiment, the inlet end of each of the arc-shaped channels is arranged on the side wall of the through hole, and the outlet end of each of the arc-shaped channels is arranged on the second end; or

[0009] 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.

[0010] In one embodiment, the inlet end and the outlet end of each of the arc-shaped channels are not on the same longitudinal section, and the inlet end of each of the arc-shaped channels and the outlet end of another arc-shaped channel adjacent to the arc-shaped channel are on the same longitudinal section.

[0011] In one embodiment, the suture device base is further provided with an initial needle insertion channel, the initial needle insertion channel is connected to the starting position of the spiral needle insertion track, and the suture needle enters the starting position of the spiral needle insertion track through the initial needle insertion channel.

[0012] The starting position of the spiral needle-entry track is located 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.

[0013] In one embodiment, a needle exit channel is also provided on the suture device base, and the needle exit channel is connected to the terminal position of the spiral needle entry track. The terminal position of the spiral needle entry track is located in the tangential direction of the last arcuate channel, so that the suture needle can enter the needle exit channel from the last arcuate channel.

[0014] In one embodiment, a first negative pressure chamber and a second negative pressure chamber are also provided on the stapler base, wherein the first negative pressure chamber is circumferentially arranged around the through hole to fix the first target body in the through hole at a predetermined position on the second target body through negative pressure; and the second negative pressure chamber is arranged at the second end of the stapler base to fix one side of the second target body to facilitate suturing.

[0015] In one embodiment, the stapler base is also provided with a first negative pressure tube connected to the first negative pressure chamber and a second negative pressure tube connected to the second negative pressure chamber, and the first negative pressure tube and the second negative pressure tube are both connected to the vacuum source outside the stapler base.

[0016] In one embodiment, the stapler base is further provided with a spherical joint for rotationally connecting with the stapler handle.

[0017] In one embodiment, the stapler base is a split structure.

[0018] In one embodiment, the stapler base includes a first base and a second base, and the first base and the second base are connected into a whole through a locking device.

[0019] According to a second aspect of the present invention, the present invention provides a method for using a stapler, comprising the following steps:

[0020] Positioning the first target body at a predetermined position on the second target body through the negative pressure adsorption effect of the stapler base;

[0021] Push the suture needle into the initial needle entry channel;

[0022] The suture needle extends out from the initial needle insertion channel and enters the spiral needle insertion track from the starting position of the spiral needle insertion track;

[0023] The suture needle is passed through each arc-shaped channel of the spiral needle-entry track in sequence;

[0024] The suture needle is made to enter the needle outlet channel from the end position of the spiral needle entry track;

[0025] A part of the needle to be sutured extends out of the needle exit channel, and the suture needle is pulled so that the suture thread is pulled along the walking track of the suture needle to complete the suturing of the first target body and the second target body at one time.

[0026] Compared with the prior art, the advantages of the present invention are: by setting a spiral needle track, the suture needle can be pushed from the starting position of the spiral needle track to the end position of the spiral needle track, and then the suture thread can be pulled to complete the suture of the first target body and the second target body at one time, so the suture speed is greatly improved, for example, a high-quality operation can be completed in such a short time of 5 minutes, thereby shortening the operation time and improving the success rate of the operation; and because the doctor no longer needs to suture one stitch at a time, but can complete the suture operation at one time, the doctor's labor intensity is greatly reduced. And the suture device of the present invention can be suitable for the suture operation of the second target body with a diameter of 3-6mm, so compared with the existing vascular anastomosis device, the suture device of the present invention has significant advantages in coronary artery bypass and cerebrovascular bypass operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0028] Figure 1is an axial cross-sectional view of a stapler in an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the trajectory of the suture thread in an embodiment of the present invention.

[0030] Reference numerals:

[0031] 100- suture device base; 200- spiral needle track; 300- first target body; 400- second target body; 500- suture needle;

[0032] 210 - arc-shaped channel; 110 - through hole; 120 - initial needle entry channel; 130 - needle exit channel; 140 - first negative pressure chamber; 150 - second negative pressure chamber; 160 - spherical joint; 170 - locking device; 180 - first negative pressure tube; 190 - second negative pressure tube. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] like Figure 1 and 2 As shown, according to the first aspect of the present invention, the present invention provides a suture device, for example, a suture device used in vascular bypass surgery. Specifically, the suture device of the present invention includes a suture device base 100, and the suture device base 100 positions the first target body 300 to a predetermined position on the second target body 400 through negative pressure adsorption. Among them, the first target body 300 can be, for example, an artificial blood vessel, and the second target body 400 can be, for example, a native blood vessel with a lesion, wherein the diameter of the native blood vessel can be 3-6mm. Therefore, the suture device of the present invention can complete the suturing of micro-vessels, which is impossible to be completed by the existing large blood vessel anastomosis device, and therefore can meet the clinical needs of heart bypass and brain bypass.

[0035] The two ends of the first target body 300 need to be sutured to the diseased part of the second target body 400 respectively, so as to play the role of an artificial blood vessel replacing the diseased part. Therefore, the axial direction of the first target body 300 is not parallel to the axial direction of the second target body 400. The end of the first target body 300 can be placed vertically on the side wall of the second target body 400, so that the end of the first target body 300 and the axial direction of the second target body 400 are perpendicular to each other.

[0036] A spiral needle entry track 200 for limiting the travel trajectory of the suture needle 500 is provided on the suture device base 100. The spiral needle entry track 200 can be used to allow the suture needle 500 used for suturing to be inserted in a spiral form in the circumferential direction of the first target body 300, so that the suture needle 500 can be pushed from the starting position of the spiral needle entry track 200 to the ending position of the spiral needle entry track 200, and the suture thread can be pulled to complete the suturing of the first target body 300 and the second target body 400 at one time.

[0037] Figure 1 The suture needle 500 shown is a schematic diagram in the initial needle insertion channel 120 described below. Since the initial needle insertion channel 120 is tubular, the suture needle 500 is elongated in the initial needle insertion channel 120, but since the suture needle 500 is made of memory alloy, high elastic stainless steel or other metal materials with strong recovery, after the suture needle 500 is pushed out of the initial needle insertion channel 120, the suture needle 500 can return to its initial shape. The suture needle 500 is wound on the needle roller in the initial state, so the initial state of the suture needle 500 can also be spiral.

[0038] Therefore, the present invention adopts the principle of spiral track, uses the pre-shaped suture needle 500 to move in the spiral track, simulates the needle distance and stitch shape of manual suture, drives the suture thread to suture the first target body 300 to the second target body 400, and can greatly improve the suture speed and reduce the doctor's labor intensity. The suture process completely simulates the process of manual suture, so no other materials and components are introduced, thereby reducing the probability of restenosis of the blood vessel.

[0039] The spiral needle track 200 of the present invention will be described in detail below.

[0040] The spiral needle insertion track 200 includes at least three arcuate channels 210, which are spirally distributed along the circumference of the first target body 300, and each arcuate channel 210 is evenly distributed on the circumference of the first target body 300, so that the suture needle 500 can be inserted evenly, and the suture needle distance and suture force can be kept consistent, so as to improve the success rate of the operation.

[0041] More specifically, for example, eight arc-shaped channels 210 may be provided, and the following description will be made by taking eight arc-shaped channels 210 as an example. It is understandable that the number of arc-shaped channels 210 may be selected according to the diameter of the second target body 400. For example, for a second target body 400 with a larger diameter, the number of arc-shaped channels 210 may be adaptively increased; for a second target body 400 with a smaller diameter, the number of arc-shaped channels 210 may be adaptively reduced, because the more arc-shaped channels 210 there are, the smaller the stitch length of the suture.

[0042] The adjacent arc-shaped channels 210 correspond to the first target body 300 and the second target body 400. Since the suture needle 500 needs to extend from one arc-shaped channel 210 and pass through the first target body 300 and the second target body 400 respectively, the corresponding part between the adjacent arc-shaped channels 210 is a part of the first target body 300 and the second target body 400.

[0043] The arcuate channel 210 matches the initial shape of the suture needle 500. For example, the shape of the arcuate channel 210 is the same as the shape of a portion of the suture needle 500, so that after the suture needle 500 extends from any arcuate channel 210, it can pass through the first target body 300 and the second target body 400 in sequence and enter another arcuate channel 210 adjacent to the arcuate channel 210.

[0044] Since the spiral needle track 200 has a stable structure, as long as the shape of the suture needle 500 is the same as the shape of the arc channel 210 in the spiral needle track 200, the suture needle 500 will pass through the spiral needle track 200 from the starting position to the ending position and complete a circle of suturing.

[0045] The first end (eg Figure 1 The lower end shown in FIG. 1 is used to contact the second target body 400, and the stapler base 100 is provided with a plurality of Figure 1 The through hole 110 extends from the upper end (as shown in FIG. 1 ), the first target 300 passes through the through hole 110 and contacts the second target 400 at the first end.

[0046] Since the suture needle 500 enters the arcuate channel 210 from the entrance end of one of the arcuate channels 210 and extends from the exit end thereof, the extended suture needle 500 passes through a portion of the first target body 300 and the second target body 400, and then enters the next arcuate channel 210 adjacent to the arcuate channel 210 (i.e., one of the needles used for suturing during artificial suturing), and the above process is repeated until the suture needle 500 has circled the circumference of the first target body 300 (e.g., Figure 2 , showing the walking track of the suture needle 500). Therefore, the inlet end of each arc-shaped channel 210 is arranged on the side wall of the through hole 110, and the outlet end of each arc-shaped channel 210 is arranged on the second end. It can be understood that the outlet end of each arc-shaped channel 210 can also be arranged on the side wall of the through hole 110, and the inlet end of each arc-shaped channel 210 is arranged on the second end.

[0047] And because the suture needle 500 entering the next arc channel 210 from the previous arc channel 210 can correspond to one of the stitches completed during manual suturing, then when the suture needle 500 passes through each arc channel 210 respectively, it can correspond to multiple stitches completed during manual suturing. Therefore, when the suture needle 500 extends from the last arc channel 210, that is, the end position of the spiral needle feed track 200, the suture thread can be dragged so that the suture thread passes through the track traveled by the suture needle 500. The suture needle 500 can then complete the suturing action at one time without the need to manually insert and pull out one stitch at a time, thereby greatly improving the suturing speed and ensuring the suture quality (the suture stitch distance, uniformity, and suture force can be controlled to be uniform, and the blood vessels can be guaranteed to not bleed).

[0048] Furthermore, the inlet end and the outlet end of each arc channel 210 are not on the same longitudinal section, and the inlet end of each arc channel 210 and the outlet end of another arc channel 210 adjacent to the arc channel 210 are located on the same longitudinal section to form a spiral needle insertion track 200 that spirally moves in the circumferential direction of the first target body 300.

[0049] The suture device base 100 is also provided with an initial needle entry channel 120, which is connected to the starting position of the spiral needle entry track 200, and the suture needle 500 enters the starting position of the spiral needle entry track 200 through the initial needle entry channel 120. The starting position of the spiral needle entry track 200 is located in the tangential direction of the first arcuate channel 210, so that the suture needle 500 can enter the arcuate channel 210 along the tangential direction of the arcuate channel 210. In other words, the suture needle 500 first enters the initial needle entry channel 120, and enters the spiral needle entry track 200 from the starting position of the spiral needle entry track 200.

[0050] In addition, a needle exit channel 130 is also provided on the suture device base 100, and the needle exit channel 130 is connected to the terminal position of the spiral needle entry track 200. The terminal position of the spiral needle entry track 200 is located in the tangential direction of the last arc channel 210, so that the suture needle 500 can enter the needle exit channel 130 from the last arc channel 210.

[0051] It should be noted that due to Figure 1 This is an axial cross-sectional view, so only two arc-shaped channels 210 are shown. Figure 1 The trajectory of the suture needle 500 is considered to be the initial needle entry channel 120 entering Figure 1 After entering the arc channel 210 on the right side of the middle, the suture needle 500 immediately enters the needle exit channel 130. It should be understood that after entering the arc channel 210, the suture needle 500 is spirally inserted in the axial direction of the first target body 300, so that after a circumferential circle around the first target body 300, a suture needle 500 is formed. Figure 2Only after following the walking track shown in the figure can the suture thread extend out from the last arc-shaped channel 210 and enter the needle outlet channel 130, thereby being able to pull the suture thread through the same walking track as the suture needle 500, and completing a circle of suture on the circumference of the first target body 300.

[0052] In some embodiments, the stapler base 100 fixes the first target body 300 and the second target body 400 relatively by negative pressure. Specifically, the stapler base 100 is provided with a first negative pressure chamber 140 and a second negative pressure chamber 150. Figure 1 As shown, the first negative pressure chamber 140 is arranged around the circumference 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 negative pressure; the second negative pressure chamber 150 is arranged at the second end of the stapler base 100 to fix one side of the second target body 400 to facilitate suturing. The second negative pressure chamber 150 can extend along the axial direction of the first target body 300 at the second end, that is, it is arranged in the form of a groove body.

[0053] Furthermore, the suture device base 100 is also provided with a first negative pressure tube 180 for connecting to the first negative pressure chamber 140 and a second negative pressure tube 190 for connecting to the second negative pressure chamber 150. The first negative pressure tube 180 and the second negative pressure tube 190 are respectively connected to a vacuum source to respectively provide vacuum to the first negative pressure chamber 140 and the second negative pressure chamber 150. Adsorption by negative pressure can ensure that the docking position of the first target body 300 and the second target body 400 is stable to ensure the suturing effect.

[0054] like Figure 1 As shown, the stapler base 100 is also provided with a ball joint 160 for rotationally connecting with the stapler handle, so that the angle can be adjusted to facilitate observation and operation of the surgical process.

[0055] The stapler base 100 is a split structure. Specifically, the stapler base 100 includes a first base and a second base, and the first base and the second base are connected into a whole through a locking device 1170. The locking device 170 can be, for example, a locking mechanism such as a lock, a buckle, a hinge, etc., which will not be repeated here.

[0056] By setting the stapler base 100 as a split structure, when one end (such as Figure 1After the suturing of the lower end of the first target body 300 and the second target body 400 is completed, the suturing device base 100 can be easily disassembled to facilitate the separation of the first target body 300 and the second target body 400. Then, the suturing device base 100 is assembled at another target position of the second target body 400, and the above suturing process is continued to complete the suturing of the other end of the first target body 300 and the second target body 400, thereby both ends of the first target body 300 can be sutured on the second target body 400.

[0057] In addition, the stapler base 100 may be a square or rectangular structure, which is not limited in the present invention.

[0058] In summary, the suturing device of the present invention has an ingeniously designed spiral needle insertion track 200, so that the suturing needle 500 can be pulled to complete the suturing operation after the suturing needle 500 moves along the spiral needle insertion track 200 for one circle. The needle insertion operation is simple and easy, and can greatly shorten the suturing time, ensure the suturing effect and reduce bleeding.

[0059] According to a second aspect of the present invention, the present invention provides a method for using a stapler, and the specific operations are as follows.

[0060] In the first step, the first target body 300 is positioned at a predetermined position on the second target body 400 by the negative pressure adsorption effect of the stapler base 100. Specifically, for the first target body 300, its entire circumference needs to be positioned; for the second target body 400, only one side needs to be positioned. Therefore, the first target body 300 can be positioned by the first negative pressure chamber 140 described above, and the second target body can be positioned by the second negative pressure chamber 150.

[0061] The second step is to push the suture needle 500 into the initial needle entry channel 120. A special needle delivery tool can be used to push the suture needle 500.

[0062] In the third step, the suture needle 500 extends from the initial needle entry channel 120 and enters the spiral needle entry track 210 from the starting position of the spiral needle entry track. The starting position of the spiral needle entry track can be located in the tangential direction of one of the arc-shaped channels 210, so that the suture needle 500 can enter the spiral needle entry track 200 from the needle entry channel 120 along the tangential direction of the arc-shaped channel 210.

[0063] The fourth step is to make the suture needle 500 pass through each arc channel 210 of the spiral needle track 200 in sequence. As described above, after the suture needle 500 extends from one of the arc channels 210, it passes through the first target body 300 and the second target body 400 in sequence and enters the next arc channel 210. The above process is repeated to make the suture needle 500 pass through each arc channel 210 of the spiral needle track 200 in sequence.

[0064] The fifth step is to make the suture needle 500 enter the needle exit channel 130 from the terminal position of the spiral needle entry track. The terminal position of the spiral needle entry track can be located in the tangent direction of the last arc channel 210.

[0065] In the sixth step, a portion of the suture needle 500 is extended out of the needle channel 130, and the suture needle 500 is pulled so that the suture thread is pulled along the walking track (such as Figure 2 As shown) the suturing of the first target body and the second target body is completed at one time.

[0066] The seventh step is to tie a knot on the suture thread and cut off the excess suture thread to complete the suturing operation.

[0067] It should be noted that the “upper”, “lower”, “top” and “bottom” mentioned in the present invention are relative to the position when the stapler is working, which is only for the convenience of description and should not limit the present invention.

[0068] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A stapler, characterized in that: The invention comprises a suturing device base, which positions a first target body at a predetermined position on a second target body through negative pressure adsorption, a first negative pressure chamber and a second negative pressure chamber are arranged on the suturing device base, the first negative pressure chamber and the second negative pressure chamber are respectively connected to a vacuum source through negative pressure tubes, and a spiral needle entry track for limiting the trajectory of a suturing needle is arranged on the suturing device base, and the suturing needle is pushed from the starting position of the spiral needle entry track to the ending position of the spiral needle entry track and then the suturing thread is pulled to complete the suturing of the first target body and the second target body at one time.

2. The stapler according to claim 1, characterized in that: The spiral needle insertion track includes at least three arc-shaped channels, and the at least three arc-shaped channels are distributed in a spiral manner along the circumference of the first target body.

3. The stapler according to claim 2, characterized in that: The adjacent arc-shaped channels correspond to the first target body and the second target body respectively, and the arc-shaped channels match the initial shape of the suture needle so that after the suture needle extends out from any arc-shaped channel, it can pass through the first target body and the second target body in sequence and enter another arc-shaped channel adjacent to the arc-shaped channel.

4. The stapler according to claim 2 or 3, characterized in that: The first end of the stapler base is used to contact the second target body. The stapler base is provided with a through hole extending from the first end to the second end, 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 according to claim 4, characterized in that: The inlet end of each of the arc-shaped channels is arranged on the side wall of the through hole, and the outlet end of each of the arc-shaped channels is arranged 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 according to claim 5, characterized in that: The inlet end and the outlet end of each arc-shaped channel are not on the same longitudinal section, and the inlet end of each arc-shaped channel and the outlet end of another arc-shaped channel adjacent to the arc-shaped channel are located on the same longitudinal section.

7. The stapler according to claim 2 or 3, characterized in that: The suture device base is also provided with an initial needle entry channel, which is connected to the starting position of the spiral needle entry track. The suture needle enters the starting position of the spiral needle entry track through the initial needle entry channel. The starting position of the spiral needle-entry track is located in the tangential direction of the first arc-shaped channel, so that the suture needle enters the arc-shaped channel along the tangential direction of the arc-shaped channel.

8. The stapler according to claim 2 or 3, characterized in that: A needle exit channel is also provided on the suturing device base, and the needle exit channel is connected to the terminal position of the spiral needle entry track. The terminal position of the spiral needle entry track is located in the tangent direction of the last arcuate channel, so that the suturing needle enters the needle exit channel from the last arcuate channel.

9. The stapler according to claim 4, characterized in that: The first negative pressure chamber is arranged around the circumference of the through hole to fix the first target body in the through hole at a predetermined position on the second target body through the action of negative pressure; the second negative pressure chamber is arranged at the second end of the suture device base to fix one side of the second target body to facilitate suturing; the suture device base is also provided with a first negative pressure tube connected to the first negative pressure chamber and a second negative pressure tube connected to the second negative pressure chamber, and the first negative pressure tube and the second negative pressure tube are both connected to the vacuum source outside the suture device base.

10. The stapler according to any one of claims 1 to 3, characterized in that: The stapler base is also provided with a spherical joint for rotationally connecting with the stapler handle.

11. The stapler according to any one of claims 1 to 3, characterized in that: The stapler base is a split structure; The stapler base comprises a first base and a second base, and the first base and the second base are connected into a whole through a locking device.

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